Lecture 5- A Tour of the Cell
|
|
- Martina Kelley
- 6 years ago
- Views:
Transcription
1 Lecture 5- A Tour of the Cell 1
2 In this lecture Prokaryotes vs. eukaryotes The organelles of the eukaryotic cell The cytoskeleton Extracellular components 2
3 What are cells? Cells are the fundamental unit of life Basic features of all cells Plasma membrane Semifluid substance called cytosol Contain DNA (carry genes) Ribosomes (make proteins) 3
4 Eukaryotic Two types of cells Plants, animals, fungi, protists Prokaryotic Bacteria, archaea 4
5 Prokaryotes Prokaryotic cells have: No nucleus DNA in an unbound region called the nucleoid No membrane-bound organelles Cytoplasm bound by the plasma membrane 5
6 Eukaryotes Eukaryotic cells have: DNA in a nucleus that is bounded by a membranous nuclear envelope Membrane-bound organelles Cytoplasm in the region between the plasma membrane and nucleus Eukaryotic cells are generally much larger than prokaryotic cells 6
7 7
8 The organelles of the eukaryotic cell (Plasma membrane) Nucleus Ribosome Mitochondria Endomembrane System Endoplasmic reticulum Golgi apparatus Lysosomes Vacuoles Plasma membrane Nuclear membrane Cytoskeleton Extracellular Matrix 8
9 The plasma membrane The Immigration and Customs Enforcement of the cell A selective barrier that allows passage of oxygen, nutrients, and waste Double layer of phospholipids Present in both eukaryotic and prokaryotic cells 9
10 10
11 Upper limit of cell size Metabolic requirements set upper limits on the size of cells The surface area to volume ratio of a cell is critical As the surface area increases by a factor of n 2, the volume increases by a factor of n 3 Small cells have a greater surface area relative to volume 11
12 Figure 6.7 Surface area increases while total volume remains constant Total surface area [sum of the surface areas (height width) of all box sides number of boxes] Total volume [height width length number of boxes] Surface-to-volume (S-to-V) ratio [surface area volume]
13 The nucleus The library of the cell The nucleus contains most of the DNA in a eukaryotic cell Mitochondria/chloroplasts contain the rest DNA is wound up into coils called chromatin The nucleolus is where ribosomes are manufactured The nuclear envelope encloses the nucleus, separating it from the cytoplasm Pores within the envelope regulate the entry and exit of molecules from the nucleus The nuclear membrane is a double membrane; each membrane consists of a lipid bilayer 13
14 14
15 1 m 0.25 m 1 m Figure 6.9 Nucleus Nucleolus Chromatin Nuclear envelope: Inner membrane Outer membrane Nuclear pore Rough ER Surface of nuclear envelope Ribosome Pore complex Close-up of nuclear envelope Chromatin Pore complexes (TEM) Nuclear lamina (TEM) 15
16 Structurally identical Protein factories Ribosomes Made of ribosomal RNA (rrna) and proteins Two subunits: large and small Ribosomes carry out protein synthesis in two locations In the cytoplasm (as free ribosomes) On the outside of the endoplasmic reticulum or the nuclear envelope (as bound ribosomes) 16
17 17
18 Mitochondria Powerhouse of the cells Break down incoming sugars to produce ATP using oxygen Enclosed by a double lipid bilayer, like the nucleus Contain fragments of their own DNA Found in all eukaryotic cells 18
19 19
20 10 m Mitochondria Mitochondrial DNA Nuclear DNA (b) Network of mitochondria in a protist cell (LM) Dyamic Mitochondrial Networks in Cancer 20
21 Powerhouse of plant cells Chloroplasts Plant cells contain BOTH chloroplasts and mitochondria Found in plant and algae cells Build up glucose through photosynthesis Also contain fragments of DNA Chloroplast structure includes Thylakoids, membranous sacs, stacked to form a granum Stroma, the internal fluid The chloroplast is one of a group of plant organelles, called plastids 21
22 22
23 Evolutionary origins of mitochondria and chloroplasts Mitochondria probably came from an ancient bacteria that was swallowed by our ancestor cells Why there is a double lipid bilayer the original plus our own Called the endosymbiont theory Chloroplasts came about the same way at a later date 23
24 Figure 6.16 Engulfing of oxygenusing nonphotosynthetic prokaryote, which becomes a mitochondrion Mitochondrion Endoplasmic reticulum Nuclear envelope Nucleus Ancestor of eukaryotic cells (host cell) Nonphotosynthetic eukaryote At least one cell Engulfing of photosynthetic prokaryote Chloroplast Mitochondrion Photosynthetic eukaryote 24
25 The Endomembrane System The Government employees Responsible for protein trafficking and some metabolic functions Includes Nuclear envelope Endoplasmic reticulum Golgi apparatus Lysosomes/perixisomes Vacuoles Plasma membrane 25
26 Endoplasmic reticulum The factory The endoplasmic reticulum (ER) accounts for more than half of the total membrane in many eukaryotic cells The ER membrane is continuous with the nuclear envelope There are two distinct regions of ER Smooth ER, which lacks ribosomes Rough ER, surface is studded with ribosomes 26
27 27
28 Smooth vs. Rough ER Smooth ER: Synthesizes lipids Metabolizes carbohydrates Detoxifies drugs and poisons Stores calcium ions Rough ER: Has bound ribosomes, which secrete glycoproteins (proteins covalently bonded to carbohydrates) Distributes transport vesicles, proteins surrounded by membranes Is a membrane factory for the cell 28
29 In what kinds of cells would you expect to see lots of mitochondria? An extensive smooth ER? 29
30 The Golgi Apparatus The post office of the cell Consists of flattened membranous sacs called cisternae (vs. cistae in mitochondria) Functions of the Golgi apparatus Modifies products of the ER Manufactures certain macromolecules Sorts and packages materials into transport vesicles Tags proteins for certain destinations 30
31 31
32 Lysosymes The garbage trucks of the cell A membranous sac of hydrolytic enzymes that can digest macromolecules Hydrolytic = breaking down through consuming water Lysosomal enzymes can hydrolyze proteins, fats, polysaccharides, and nucleic acids Lysosomal enzymes work best in the acidic environment inside the lysosome 32
33 Some types of cell can engulf another cell by phagocytosis This forms a food vacuole A lysosome fuses with the food vacuole and digests the molecules Lysosomes also use enzymes to recycle the cell s own organelles and macromolecules, a process called autophagy A human liver cell recycles half of its macromolecules per week through its lysosomes 33
34 Figure 6.13 Nucleus 1 m Vesicle containing two damaged organelles 1 m Mitochondrion fragment Lysosome Peroxisome fragment Digestive enzymes Lysosome Lysosome Plasma membrane Digestion Peroxisome Food vacuole Vesicle Mitochondrion Digestion (a) Phagocytosis (b) Autophagy 34
35 Also garbage men Peroxisomes Peroxisomes are specialized metabolic compartments bounded by a single membrane Produce hydrogen peroxide and convert it to water Perform reactions with many different functions How peroxisomes are related to other organelles is still unknown 35
36 Figure m Chloroplast Peroxisome Mitochondrion 36
37 Vacuoles The Public Storage of the cell Storage compartments for food, enzymes, and water 37
38 How the endomembrane system all fits together 38
39 The Cytoskeleton The infrastructure, roads, freeways of the cell The cytoskeleton is a network of fibers extending throughout the cytoplasm It organizes the cell s structures and activities, anchoring many organelles It is composed of three types of molecular structures Microtubules Microfilaments Intermediate filaments 39
40 40
41 Table m 10 m 5 m Column of tubulin dimers 25 nm Actin subunit Keratin proteins Fibrous subunit (keratins coiled together) Tubulin dimer 7 nm 8 12 nm 41
42 Microtubules Microtubules are hollow rods about 25 nm in diameter and about 200 nm to 25 microns long Compression-resistant Functions of microtubules Shaping the cell Guiding movement of organelles Separating chromosomes during cell division In animal cells, grow out from a centrosome The centrosome is a microtubule-organizing center Form cilia and flagella 42
43 43
44 44
45 Microfilaments Solid rods about 7 nm in diameter, built as a twisted double chain of actin subunits Bear tension, resisting pulling forces within the cell Form a 3-D network called the cortex just inside the plasma membrane to help support the cell s shape Actin protein structure 45
46 Figure 6.27a Muscle cell Actin filament Myosin filament Myosin head (a) Myosin motors in muscle cell contraction 0.5 m 46
47 Figure 6.27b Pseudopodia (cellular feet ) extend and contract through the contraction of actin in microfilaments Cortex (outer cytoplasm): gel with actin network Inner cytoplasm: sol with actin subunits 100 m (b) Amoeboid movement Extending pseudopodium BIOL 211 Winter
48 Intermediate filaments Range in diameter from 8 12 nanometers, larger than microfilaments but smaller than microtubules Support cell shape and fix organelles in place More permanent cytoskeleton fixtures than the other two classes Outer layers of skin are composed of keratin, which remains behind when the cell dies 48
49 This image is on the website of hair salon and is advertised as in a keratin hair treatment. What s wrong with this picture? 49
50 Motor proteins The public transport of the cell Motor proteins called dyenins and kinesins walk along microtubules by expending ATP They can be attached to lipid bubbles full of molecules, transporting these packages from one side of the cell to the other 50
51 Figure 6.21 ATP Vesicle Receptor for motor protein (a) Motor protein (ATP powered) Microtubule of cytoskeleton Microtubule Vesicles 0.25 m (b) 51
52 Extracellular Structures Most cells synthesize and secrete materials that are external to the plasma membrane These extracellular structures include Cell walls of plants The extracellular matrix (ECM) of animal cells Intercellular junctions 52
53 Plant cell walls Most plants, fungi, and some protists have cell walls Made of cellulose fibers embedded in other polysaccharides and protein May have multiple layers Primary cell wall: relatively thin and flexible Middle lamella: thin layer between primary walls of adjacent cells Secondary cell wall (in some cells): added between the plasma membrane and the primary cell wall Plasmodesmata are channels between adjacent plant cells 53
54 Figure 6.28 Secondary cell wall Primary cell wall Middle lamella 1 m Central vacuole Cytosol Plasma membrane Plant cell walls Plasmodesmata 54
55 Animals Extracellular Matrix Animal cells lack cell walls but are covered by an elaborate extracellular matrix (ECM) The ECM is made up of glycoproteins such as collagen, proteoglycans, and fibronectin ECM proteins bind to receptor proteins in the plasma membrane called integrins 55
56 Figure 6.30 Collagen EXTRACELLULAR FLUID Polysaccharide molecule Proteoglycan complex Carbohydrates Fibronectin Core protein Integrins Plasma membrane Proteoglycan molecule Proteoglycan complex Microfilaments CYTOPLASM 56
57 Glycoproteins and proteoglycans Glycoprotein a (large) protein covalently bonded to a short polysaccharide Collagen is a glycoprotein, and accounts for about 40% of the proteins in the human body Fibronectin Proteoglycan a small protein covalently bonded to a long polysaccharide 57
58 Cell Junctions Neighboring cells in tissues, organs, or organ systems often stick, interact, and talk through direct physical contact Intercellular junctions facilitate this contact There are several types of intercellular junctions Plasmodesmata Tight junctions Desmosomes Gap junctions 58
59 More cell junctions At tight junctions, membranes of neighboring cells are pressed together, preventing leakage of extracellular fluid Desmosomes (anchoring junctions) fasten cells together into strong sheets Gap junctions (communicating junctions) provide cytoplasmic channels between adjacent cells 59
60 TEM Figure 6.32 Tight junctions prevent fluid from moving across a layer of cells Tight junction TEM 0.5 m Tight junction Intermediate filaments Desmosome Gap junction TEM 1 m Ions or small molecules Plasma membranes of adjacent cells Space between cells Extracellular matrix 0.1 m 60
61 A macrophage is a type of cell that hunts and eats foreign bacteria through phagocytosis. Describe how each of the following organelles plays a role in its movement and eating. Cytoskeleton Lysosome Vacuole Plasma membrane 61
62 Vocabulary Eukaryotic, prokaryotic cell Plasma membrane Cell wall Nucleus Nuclear envelope Nucleolus Nuclear pore Chromatin Ribosome Mitochondria Mitochondrial matrix Endoplasmic reticulum Golgi apparatus Cytoskeleton Lysosomes/Peroxisomes Phagocytosis Vacuoles Cytoplasm Microtubules, intermediate filaments, Motor proteins Actin, myosin Centrosome Glycoprotein, proteoglycan Cell junctions Gap junction Tight junctions Plasmodesmata Desmosomes BIOL 211 Winter
63 Questions? 63
4 A Tour of the Cell CAMPBELL BIOLOGY IN FOCUS. Urry Cain Wasserman Minorsky Jackson Reece
CAMPBELL BIOLOGY IN FOCUS Urry Cain Wasserman Minorsky Jackson Reece 4 A Tour of the Cell Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge Overview: The Fundamental Units of Life All
More informationHuman height. Length of some nerve and muscle cells. Chicken egg. Frog egg. Most plant and animal cells Nucleus Most bacteria Mitochondrion
10 m 1 m 0.1 m 1 cm Human height Length of some nerve and muscle cells Chicken egg Unaided eye 1 mm Frog egg 100 µm 10 µm 1 µm 100 nm 10 nm Most plant and animal cells Nucleus Most bacteria Mitochondrion
More informationA Tour of the Cell. Chapter 6. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 6 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationA Tour of the Cell 4/10/12. Chapter 6. Overview: The Fundamental Units of Life
Chapter 6 LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson A Tour of the Cell Lectures by
More informationLectures by Erin Barley Kathleen Fitzpatrick Pearson Education, Inc Pearson Education, Inc. Figure 6.5. Bacterial chromosome
Chapter 6 LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson A Tour of the Cell Overview:
More informationA TOUR OF THE CELL 10/1/2012
A TOUR OF THE CELL Chapter 6 KEY CONCEPTS: Eukaryotic cells have internal membranes that compartmentalize their functions The eukaryotic cell s genetic instructions are housed in the nucleus and carried
More information(a) TEM of a plasma. Fimbriae. Nucleoid. Ribosomes. Plasma membrane. Cell wall Capsule. Bacterial chromosome
0 m m 0. m cm mm 00 µm 0 µm 00 nm 0 nm Human height Length of some nerve and muscle cells Chicken egg Frog egg Most plant and animal cells Most bacteria Smallest bacteria Viruses Proteins Unaided eye Light
More informationA Tour of the Cell. Chapter 6. Slide 1. Slide 2. Slide 3. Overview: The Fundamental Units of Life
Slide 1 Chapter 6 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan
More informationMicrofilaments. myosin. In muscle cells. Microfilaments. Microfilaments. Video: Cytoplasmic Streaming. amoeboid movement. Pseudopodia.
Microfilaments Fig, 6-27a myosin Microfilaments protein func3ons in cellular mo3lity in addi3on to ac3n In muscle cells Thousands of ac3n filaments are arranged parallel to one another Thicker myosin filaments
More informationLECTURE PRESENTATIONS
LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 6 A Tour of the Cell Lectures by
More informationA. Major parts 1. Nucleus 2. Cytoplasm a. Contain organelles (see below) 3. Plasma membrane (To be discussed in Cellular Transport Lecture)
Lecture 5: Cellular Biology I. Cell Theory Concepts: 1. Cells are the functional and structural units of living organisms 2. The activity of an organism is dependent on both the individual and collective
More informationA Tour of the Cell. Chapter 7
A Tour of the Cell Chapter 7 Cytology: Study of Cells Light Microscopes uses light & a set of lenses Magnification ratio of object s image size to its real size Resolution measures the clarity of the image
More informationAP Biology Summer Assignment
AP Biology Summer Assignment 2018-2019 AP Biology is a rigorous course and due to the large amount of material that needs to be covered during the school year, a summer assignment is essential. The first
More informationAll organisms are made of cells (cells are the basic units of life) Cell structure is highly correlated to cellular function
CELLS CHAPTER 6 I. CELL THEORY - All organisms are made of cells (cells are the basic units of life) Cell structure is highly correlated to cellular function All cells are related by their descent from
More informationA Tour of the Cell. Ch. 7
A Tour of the Cell Ch. 7 Cell Theory O All organisms are composed of one or more cells. O The cell is the basic unit of structure and organization of organisms. O All cells come from preexisting cells.
More informationLECTURE PRESENTATIONS
LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 6 A Tour of the Cell Lectures by
More informationCell Theory. Chapter 6. cell. fundamental unit of structure and function for all living organisms. arise only from previously existing cell
Chapter 6 cell Cell Theory fundamental unit of structure and function for all living organisms arise only from previously existing cell Figure 5.4 The size range of cells WHY are your brain cells the same
More informationA Tour of the Cell. Chapter 6. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 6 1 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationThe Golgi Apparatus: Shipping and Receiving Center. The Golgi apparatus. Functions of the Golgi apparatus. Lysosomes: Digestive Compartments
The Golgi Apparatus: Shipping and Receiving Center The Golgi apparatus Receives (on the cis-side) many of the transport vesicles produced in the rough ER Consists of flattened membranous sacs called cisternae
More informationA Tour of the Cell. Chapter 6. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 6 1 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationBell Work: What is the fundamental unit of life? 2014 Pearson Education, Inc.
Bell Work: What is the fundamental unit of life? All organisms are made of cells The cell is the simplest collection of matter that can be alive All cells are related by their descent from earlier cells
More informationLECTURE PRESENTATIONS
LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Chapter 6 A Tour of the Cell Lectures by
More informationA Tour of the Cell. Chapter 6. Biology. Edited by Shawn Lester. Inner Life of Cell. Eighth Edition Neil Campbell and Jane Reece
Chapter 6 A Tour of the Cell Inner Life of Cell Edited by Shawn Lester PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin
More informationCytosol the fluid Cytoplasm cell interior, everything outside the nucleus but within the cell membrane, includes the organelles, cytosol, and
Cell Organelles Plasma Membrane comprised of a phospholipid bilayer and embedded proteins Outer surface has oligosaccharides separates the cells s contents from its surroundings Cytosol the fluid Cytoplasm
More informationBIOLOGY. A Tour of the Cell CAMPBELL. Reece Urry Cain Wasserman Minorsky Jackson. Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick
CAMPBELL BIOLOGY TENTH EDITION Reece Urry Cain Wasserman Minorsky Jackson 6 A Tour of the Cell Lecture Presentation by Nicole Tunbridge and Kathleen Fitzpatrick Concept 6.2: Eukaryotic cells have internal
More informationChapter 6. A Tour of the Cell. Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells
Chapter 6 A Tour of the Cell Chapter Outline Concept 6.1 Biologists use microscopes and the tools of biochemistry to study cells In a light microscope (LM), visible light passes through the specimen and
More informationCH 4: A tour of the cell Overview: The Fundamental Units of Life. Concept 4.1: Biologists use microscopes and the tools of biochemistry to study cells
CH 4: A tour of the cell Overview: The Fundamental Units of Life All organisms are made of cells The cell is the simplest collection of matter that is alive All cells are related by descent from earlier
More informationPlasma Membrane. comprised of a phospholipid bilayer and embedded proteins separates the cells s contents from its surroundings
Cell Organelles Plasma Membrane comprised of a phospholipid bilayer and embedded proteins separates the cells s contents from its surroundings Cytosol the fluid Cytoplasm cell interior, everything outside
More informationCELL PARTS TYPICAL ANIMAL CELL
AP BIOLOGY CText Reference, Campbell v.8, Chapter 6 ACTIVITY1.12 NAME DATE HOUR CELL PARTS TYPICAL ANIMAL CELL ENDOMEMBRANE SYSTEM TYPICAL PLANT CELL QUESTIONS: 1. Write the name of the cell part in the
More informationCells. Variation and Function of Cells
Cells Variation and Function of Cells Cell Theory states that: 1. All living things are made of cells 2. Cells are the basic unit of structure and function in living things 3. New cells are produced from
More informationAP Biology Book Notes Chapter 4: Cells v Cell theory implications Ø Studying cell biology is in some sense the same as studying life Ø Life is
AP Biology Book Notes Chapter 4: Cells v Cell theory implications Ø Studying cell biology is in some sense the same as studying life Ø Life is continuous v Small cell size is becoming more necessary as
More informationORGANELLES OF THE ENDOMEMBRANE SYSTEM
Membranes compartmentalize the interior of the cell and facilitate a variety of metabolic activities. Chloroplasts and a rigid cell wall are what distinguish a plant cell from an animal cell. A typical
More informationCh. 6 Tour of the Cell
Ch. 6 Tour of the Cell 2007-2008 Microscopy Scientists use microscopes to visualize cells too small to see with the naked eye In a light microscope (LM), visible light is passed through a specimen and
More informationA Tour of the Cell. Chapter 6. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 6 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationA Tour of the Cell. Chapter 6. PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece
Chapter 6 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationCHAPTER 6: A TOUR OF THE CELL AP BIOLOGY 2011
CHAPTER 6: A TOUR OF THE CELL AP BIOLOGY 2011 1 IMPORTANCE OF CELLS ALL ORGANISMS ARE MADE OF CELLS CELLS ARE THE SMALLEST LIVING UNIT STRUCTURE IS CORRELATED TO FUNCTION ALL CELLS ARE RELATED BY THEIR
More informationCHAPTER 4 A TOUR OF THE CELL
CHAPTER 4 A TOUR OF THE CELL Microscopes Con. 4.1 magnification: size resolution: clarity contrast: differences in parts Light Microscopy Techniques (p.68) a. Brightfield unstained b. Brightfield stained
More informationCell Structure & Function. Source:
Cell Structure & Function Source: http://koning.ecsu.ctstateu.edu/cell/cell.html Definition of Cell A cell is the smallest unit that is capable of performing life functions. http://web.jjay.cuny.edu/~acarpi/nsc/images/cell.gif
More informationCh. 6: A Tour of the Cell
Ch. 6: A Tour of the Cell 1. Compare the 2 Types of Cells PROKARYOTES BOTH EUKARYOTES Domain: Domain: Relative Size & Complexity: Relative Size & Complexity: No DNA in No Examples: Has Has Examples: 2.
More informationEarly scientists who observed cells made detailed sketches of what they saw.
Early scientists who observed cells made detailed sketches of what they saw. Early scientists who observed cells made detailed sketches of what they saw. CORK Early scientists who observed cells made detailed
More informationCytology. Light microscopy resolving power Electron microscopy TEM SEM Cell fractionation Ultracentrifuges
Chapter 7: A Tour of the Cell Cytology Light microscopy resolving power Electron microscopy TEM SEM Cell fractionation Ultracentrifuges Prokaryotic cells Nucleoid No organelles with membranes Ribosomes
More informationOrganelles of the Cell & How They Work Together. Packet #7
Organelles of the Cell & How They Work Together Packet #7 Introduction Introduction Organization of cells is basically similar in all cells. Additionally, most cells are tiny Ranging from 1 1000 cubic
More information4/12/17. Cells. Cell Structure. Ch. 2 Cell Structure and Func.on. Range of Cell Sizes BIOL 100
Ch. 2 Cell Structure and Func.on BIOL 100 Cells Fundamental units of life Cell theory All living things are composed of one or more cells. The cell is the most basic unit of life. All cells come from pre-existing
More informationA Tour of the Cell CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE. Overview: The Fundamental Units of Life
4 A Tour of the Cell CAMPBELL BIOLOGY IN FOCUS URRY CAIN WASSERMAN MINORSKY REECE Lecture Presentations by Kathleen Fitzpatrick and Nicole Tunbridge, Simon Fraser University SECOND EDITION Overview: The
More informationBio10 Cell Structure SRJC
3.) Cell Structure and Function Structure of Cell Membranes Fluid mosaic model Mixed composition: Phospholipid bilayer Glycolipids Sterols Proteins Fluid Mosaic Model Phospholipids are not packed tightly
More informationOrganelles of the Cell & How They Work Together. Packet #5
Organelles of the Cell & How They Work Together Packet #5 Developed by Mr. Barrow 2018 1 Introduction Organization of cells is basically similar in all cells. Additionally, most cells are tiny Ranging
More informationA Tour of the Cell. Chapter 6. Biology Eighth Edition Neil Campbell and Jane Reece. PowerPoint Lecture Presentations for
Chapter 6 A Tour of the Cell PowerPoint Lecture Presentations for Biology Eighth Edition Neil Campbell and Jane Reece Lectures by Chris Romero, updated by Erin Barley with contributions from Joan Sharp
More informationOrganelles of the Cell & How They Work Together. Packet #5
Organelles of the Cell & How They Work Together Packet #5 Developed by Mr. Barrow 2018 1 Introduction Organization of cells is basically similar in all cells. Additionally, most cells are tiny Ranging
More informationHuman Epithelial Cells
The Cell Human Epithelial Cells Plant Cells Cells have an internal structure Eukaryotic cells are organized Protective membrane around them that communicates with other cells Organelles have specific jobs
More informationNucleic acids. Nucleic acids are information-rich polymers of nucleotides
Nucleic acids Nucleic acids are information-rich polymers of nucleotides DNA and RNA Serve as the blueprints for proteins and thus control the life of a cell RNA and DNA are made up of very similar nucleotides.
More informationA Tour of the Cell. Chapter 4. Most cells are microscopic. Cells vary in size and shape
Chapter 4 A Tour of the Cell Most cells are microscopic Cells vary in size and shape 10 m Human height 1 m Length of some nerve and muscle cells 100 mm (10 cm) 10 mm (1 cm) Chicken egg Unaided eye 1 mm
More informationA Tour of the Cell Lecture 2, Part 1 Fall 2008
Cell Theory 1 A Tour of the Cell Lecture 2, Part 1 Fall 2008 Cells are the basic unit of structure and function The lowest level of structure that can perform all activities required for life Reproduction
More information11/1/2014. accumulate in brain.
EU 4.A: Interactions within biological systems lead to complex properties. EU 4.B: Competition and cooperation are important aspects of biological systems. EU 4.C: Naturally occurring diversity among and
More informationGeneral Biology. The Fundamental Unit of Life The Cell. All organisms are made of cells The cell is the simplest collection of matter that can live
General Biology Course No: BNG2003 Credits: 3.00 3. A Tour of the Cell Prof. Dr. Klaus Heese The Fundamental Unit of Life The Cell All organisms are made of cells The cell is the simplest collection of
More informationLysosomes. Vacuoles. Phagocytosis. One cell engulfing another. forms a food vacuole. fuses with lysosome. Autophagy. Lysosomes use enzymes
Lysosomes Phagocytosis One cell engulfing another forms a food vacuole fuses with lysosome Autophagy Lysosomes use enzymes to recycle the cell s own organelles and macromolecules Fig. 6-14 Nucleus 1 µm
More informationNOTES: CH 6 A Tour of the Cell
NOTES: CH 6 A Tour of the Cell Overview: The Importance of Cells All organisms are made of cells The cell is the simplest collection of matter that can live Cell structure is correlated to cellular function
More informationDon t Freak Out. Test on cell organelle on Friday!
Cell Structure 1 Don t Freak Out Test on cell organelle on Friday! This test should be a buffer test and help raise your overall test score. All information will come from this week! 2 Cells Provide Compartments
More informationCHAPTER 6 A TOUR OF THE CELL
Electron microscope Light microscope Unaided eye Overview: The Fundamental Units of Life All organisms are made of cells The cell is the simplest collection of matter that can live Cell structure is correlated
More informationCell Structure. Cells. Why are cells so small? 9/15/2016. Schleiden and Schwann proposed Cell Theory in
Cell Structure Cells Cells are sacs of fluid that are reinforced by proteins and surrounded by membranes. Inside the fluid float organelles. Organelles: structures inside the cell that are used for metabolic
More informationName 4 A Tour of the Cell Test Date Study Guide You must know: The difference between prokaryotic and eukaryotic cells. The structure and function of
Name _ 4 A Tour of the Cell Test Date Study Guide You must know: The difference between prokaryotic and eukaryotic cells. The structure and function of organelles common to plant and animal cells. The
More informationCell and Cell Membrane Structure and Function
Lesson 3 Cell and Cell Membrane Structure and Function Introduction to Life Processes - SCI 102 1 The Cell Theory Three principles comprise the cell theory 1) Every living organism is made up of one or
More informationChapter 7. (7-1 and 7-2) A Tour of the Cell
Chapter 7 (7-1 and 7-2) A Tour of the Cell Microscopes as Windows to the World of Cells Cells were first described in 1665 by Robert Hooke. By the mid-1800s, the accumulation of scientific evidence led
More informationOrganelles. copyright cmassengale 1
Organelles copyright cmassengale 1 Organelles Very small (Microscopic) Perform various functions for a cell Found in the cytoplasm May or may not be membrane-bound 2 Animal Cell Organelles Nucleolus Nucleus
More informationAnimal & Plant Cells Biology 20
Animal & Plant Cells Biology 20 Structures in Cells ALL cells start out as fully functional living things They must be able to create and maintain substances (compounds, ATP, ADP) and structures (membranes,
More informationEukaryotic cells contain organelles that allow the specializations and the separation of functions within the cell.
Section 3: Eukaryotic cells contain organelles that allow the specializations and the separation of functions within the cell. K What I Know W What I Want to Find Out L What I Learned Essential Questions
More informationFirst to View Cells. copyright cmassengale
CELL THEORY All living things are made of cells Cells are the basic unit of structure and function in an organism (basic unit of life) Cells come from the reproduction of existing cells (cell division)
More informationCh. 6 A Tour of the Cell BIOL 222
Ch. 6 A Tour of the Cell BIOL 222 Overview: The Fundamental Units of Life All organisms are made of cells The cell is the simplest collec=on of ma>er that can live Cell structure is correlated to cellular
More informationBiology Structures in Cells. 1.3 Structures in Cells
Biology 2201 1.3 Structures in Cells Structures in Cells ALL cells start out as fully functional living things They must be able to create and maintain substances (compounds, ATP, ADP) and structures (membranes,
More informationChapter 6: A Tour of the Cell. 1. Studying Cells 2. Intracellular Structures 3. The Cytoskeleton 4. Extracellular Structures
Chapter 6: A Tour of the Cell 1. Studying Cells 2. Intracellular Structures 3. The Cytoskeleton 4. Extracellular Structures 1. Studying Cells Concepts of Microscopy MAGNIFICATION factor by which the image
More information1. Studying Cells. Concepts of Microscopy 11/7/2016. Chapter 6: A Tour of the Cell
Electron microscope Light microscope Unaided eye 11/7/2016 Chapter 6: A Tour of the Cell 1. Studying Cells 2. Intracellular Structures 3. The Cytoskeleton 4. Extracellular Structures 1. Studying Cells
More information10/13/11. Cell Theory. Cell Structure
Cell Structure Grade 12 Biology Cell Theory All organisms are composed of one or more cells. Cells are the smallest living units of all living organisms. Cells arise only by division of a previously existing
More informationObjectives. To determine the differences between plant and animal cells To discover the structure and function of cellular organelles.
Cell Organelles 3.2 Objectives To determine the differences between plant and animal cells To discover the structure and function of cellular organelles. Basic Cellular Structures Cell membrane (cytoplasmic
More informationEukaryotic cell. Premedical IV Biology
Eukaryotic cell Premedical IV Biology The size range of organisms Light microscopes visible light is passed through the specimen and glass lenses the resolution is limited by the wavelength of the visible
More informationTHE CELL Cells: Part 1
THE CELL Cells: Part 1 OBJECTIVES By the end of the lesson you should be able to: State the 2 types of cells Relate the structure to function for all the organelles TYPES OF CELLS There are two types of
More informationA Tour of the Cell Chapter 4. Outline. Early contributors to Understanding Cells. Cell Theory. Cell Size s Matt Schleiden & Ted Schann
A Tour of the Cell Chapter 4 Outline History of the science behind cells Cell theory & its importance Why are cells small? Microscopes Cell structure and function Prokaryotic cells Eukaryotic cells Early
More informationReview from Biology A
Chapter 4 Review from Biology A The Cell Theory All organisms are made of cells Cells come from pre-existing cells The cell is the simplest collection of matter that can live Scientists whose work you
More informationPlasma Membrane defines inside from outside. lasma membrane. Common features of all cells. Plasma Membrane defines inside from outside
A Tour of the Cell Friday Sept 16, 2005 BCOR 011 Lecture 8 Common features of all cells Plasma Membrane defines inside from outside 10 µm 1 2 lasma Functions as a selective barrier Specific portals for
More informationCELL PART OF THE DAY. Chapter 7: Cell Structure and Function
CELL PART OF THE DAY Chapter 7: Cell Structure and Function Cell Membrane Cell membranes are composed of two phospholipid layers. Cell membrane is flexible, not rigid The cell membrane has two major functions.
More informationEukaryotic Cell Structure
Eukaryotic Cell Structure Vocabulary listed for Chapter 7.3: cell wall, chromatin, nucleolus, ribosome, cytoplasm, endoplasmic reticulum, Golgi apparatus, vacuole, lysosome, chloroplast, plastid, chlorophyll,
More information2. scanning electron microscope vs. transmission electron microscope. nucleus, nuclear envelope, nucleolus, ribosomes
Honors Biology Unit 2 Chapter 4 A TOUR OF THE CELL 1. light microscope 2. scanning electron microscope vs. transmission electron microscope 3. surface area to volume ratio 4. prokaryotic cell vs. animal
More informationChapter 4: Cell Structure and Function
Chapter 4: Cell Structure and Function Robert Hooke Fig. 4-2, p.51 The Cell Smallest unit of life Can survive on its own or has potential to do so Is highly organized for metabolism Senses and responds
More information7-2 : Plasma Membrane and Cell Structures
7-2 : Plasma Membrane and Cell Structures Plasma Membrane of aveolar sac But first... Let s Review What is cell theory? Light microscopes vs. electron microscopes Prokaryotic vs. eukaryotic Basic Cell
More informationBiological diversity & Unity. Chapter 7. Activities of life. How do we study cells? Light Microscope. Electron Microscope 9/7/2012
Biological diversity & Unity Chapter 7 The cell: Basic unit of Life Underlying the diversity of life is a striking unity DNA is universal genetic language Cells are the basic unit of structure & function
More informationChapter 4. A Tour of the Cell. Lecture by Richard L. Myers
Chapter 4 A Tour of the Cell PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Lecture by Richard L. Myers Introduction: Cells on the Move
More information10/5/2015. Cell Size. Relative Rate of Reaction
The Cell Biology 102 Fundamental unit of life Smallest unit that displays all the basic elements of life Lecture 5: Cells Cell Theory 1. All living things are made of one or more cells Cell Theory 2. The
More informationCell Structure and Function
Cell Theory Cell Structure and Function Chapter 6 Pg. 94-124 What is a cell? The basic functional unit of all living things. The Cell Theory states All organisms are made of one or more cells. Cells are
More informationPlants, Animals, Fungi and Protists have Eukaryotic Cell(s)
Cell Structure Plants, Animals, Fungi and Protists have Eukaryotic Cell(s) Plant Cell Animal Cell straight edges curved edges Cell Organization cytoplasm cell membrane Eukaryotic cells have 3 major parts:
More informationCytology = the study of cells. Chapter 4 CELL STRUCTURE
Cytology = the study of cells Chapter 4 CELL STRUCTURE Cellular basis of life: Basic unit of life Lowest level with all attributes of life Organisms composed of one or more cells Cell structure correlated
More informationA Tour of the Cell. reference: Chapter 6. Reference: Chapter 2
A Tour of the Cell reference: Chapter 6 Reference: Chapter 2 Monkey Fibroblast Cells stained with fluorescent dyes to show the nucleus (blue) and cytoskeleton (yellow and red fibers), image courtesy of
More informationChapter 4. A Tour of the Cell. Lecture by Richard L. Myers
Chapter 4 A Tour of the Cell PowerPoint Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Lecture by Richard L. Myers Introduction: Cells on the Move
More information7-2 : Plasma Membrane and Cell Structures
7-2 : Plasma Membrane and Cell Structures Plasma Membrane of aveolar sac But first... Let s Review What is cell theory? Light microscopes vs. electron microscopes Prokaryotic vs. eukaryotic Basic Cell
More informationUnit 2:The Cell. Section 3: Organelle Structure and Function Mrs. McNamara Biology
Unit 2:The Cell Section 3: Organelle Structure and Function Mrs. McNamara Biology Organelle-cell part that performs a specific function for the cell Most are surrounded by a membrane Each helps to maintain
More informationSBI3U7 Cell Structure & Organelles. 2.2 Prokaryotic Cells 2.3 Eukaryotic Cells
SBI3U7 Cell Structure & Organelles 2.2 Prokaryotic Cells 2.3 Eukaryotic Cells No nucleus Prokaryotic Cells No membrane bound organelles Has a nucleus Eukaryotic Cells Membrane bound organelles Unicellular
More informationThe Fundamental Unit of Life The Cell. General Biology. All organisms are made of cells. The cell is the simplest collection of matter that can live
Course No: BNG2003 Credits: 3.00 3. A Tour of the Cell General Biology The Fundamental Unit of Life The Cell All organisms are made of cells The cell is the simplest collection of matter that can live
More informationChapter 4 A Tour of the Cell
Chapter 4 A Tour of the Cell PowerPoint Lectures Campbell Biology: Concepts & Connections, Eighth Edition REECE TAYLOR SIMON DICKEY HOGAN Lecture by Edward J. Zalisko Introduction Cells have a cytoskeleton
More informationChapter 4. A Tour of the Cell. Lectures by Edward J. Zalisko
Chapter 4 A Tour of the Cell PowerPoint Lectures for Campbell Essential Biology, Fifth Edition, and Campbell Essential Biology with Physiology, Fourth Edition Eric J. Simon, Jean L. Dickey, and Jane B.
More informationCell Structure and Function
Cell Structure and Function Agre and cells in the news Cells Smallest living unit Most are microscopic Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork Saw row of empty boxes Coined
More informationLECTURE 3 CELL STRUCTURE
LECTURE 3 CELL STRUCTURE HISTORY The cell was first discovered by Robert Hooke in 1665 examining very thin slices of cork and saw a multitude of tiny pores that remarked looked like the walled compartments
More informationCh. 7 Inside the Cell BIOL 222
Ch. 7 Inside the Cell BIOL 222 Overview: The Fundamental Units of Life All organisms are made of cells The cell is the simplest collec=on of ma>er that can live Cell structure is correlated to cellular
More informationChapter 4 A Tour of the Cell
Chapter 4 A Tour of the Cell PowerPoint Lectures for Campbell Biology: Concepts & Connections, Seventh Edition Reece, Taylor, Simon, and Dickey Lecture by Edward J. Zalisko The image The Introduction Cells
More information