WEAR GOGGLES, GLOVES AND A LAB APRON!!!!
|
|
|
- Alberta Maxwell
- 5 years ago
- Views:
Transcription
1 Organic Food Lab =) Problem: What test are used to discover if certain organic molecules are present in food? Could these tests be used to identify an unknown food? Background: We will be studying various systems in the body that use the basic units in food. To determine which molecules are present in food, scientists have devised various test to detect whether there is sugar, starch, protein, or fat. These tests rely on the specific chemical properties of the compound being tested. An example is the test for fats. The test employs a fat soluble dye. If there is no fat, there is no when you add the dye. Another test for fats would be by just using a brown paper bag. If the food creates an oil spot then there is fat, if there is no spot, there is no fat. In your lab today, you will be testing various known compounds, using the 4 different tests described in the procedures. Then you will receive an unknown solution and a list of possible substances it could be. Your mission, if you choose (and yes you do choose) to accept it, will be to identify your unknown and report the results of the known substances for each test. Benedict s reagent test for the presence of a certain chemical group found in simple sugars (glucose, fructose, etc.) and some more complex double sugars (maltose, lactose, found in milk). These sugars will give a positive test with the Benedicts reagent. These reactions will undergo a change when there is sugar present. These changing reactions are called COLORIMETRIC ASSAYS. Color of solution with food/benedicts BLUE GREEN/YELLOW GREEN ORANGE/BRICK RED Meaning of Color No sugar content Small amount sugar present Large amount of sugar present Starch is a polysaccharide composed of hundreds of glucose subunits joined in long chains. Iodine is a yellow-brown solution, but will turn dark blue or black in the presence of starch. III. Protein Test ---> Protein Test Proteins are made up of small subunits called amino acids. These amino acids link together by making special covalent bonds called peptide bonds. These peptide bonds react very nicely with copper ions under the right conditions to make a very pretty and attractive purple. This part of the experiment is hazardous.so for this test: WEAR GOGGLES, GLOVES AND A LAB APRON!!!! IV. Fat Test ---> Brown Paper Test Water is a polar molecule and paper/wood is a non-polar. These don t mix. So a drop of water will not be readily absorbed by paper. On the other hand, a fat molecule is made up of three long fatty acid chains joined to a glycerol molecule. It is a non-polar molecule like the paper. Non-polar likes non-polar and a drop of oil/fat will get absorbed by the paper easily. *Non-polar attracts non-polar* *Polar attracts polar*
2 PROCEDURES: 1. Take 3 test tubes and label with what test solution is going to be put in it (water, glucose, and corn syrup). 2. Fill each of the tubes (about 1cm) with one of each of testing solutions. 3. Add the Benedict s Solution to each of the test tubes (about to 3cm full in the tube). 4. Carefully place in the boiling hot water bath They are HOT!!! 5. Wait for 3 minutes.then remove from the water bath with test tube clamps and place in your test tube rack. 6. Record your results in the data table. 7. Rinse your test tubes and put in dirty dish tray. 1. Take 2 test tubes: fill one with 2ml of starch and fill one test tube with 2 ml of water. 2. Place 5 drops of Iodine solution in each and record your observations in the chart. 3. Place a drop on a piece of potato and record your observations in the chart. 4. Clean up by rinsing tubes out and throwing away the food. III. Protein Test ---> Protein Test WEAR GOGGLES, GLOVES AND A LAB APRON!!!! 1. Using 2 clean test tubes, fill each test tube (to about 3 cm full) with one of each of the test substances. 2. Fill all the tubes with about 2 cm worth of 10% NaOH. BE VERY CAREFUL WITH THIS STEP NaOH IS A VERY STRONG BASE!!! 3. Mix each tube by tapping the bottom of the tube slightly with the side of your finger. 4. Add five (5) drops of 1% CuSO 4 (copper sulfate) solution 5. Mix again and record the change in the table. 6. Place your test tubes carefully in the designated receptacle. IV. Fat Test ---> Brown paper Test 1. Draw two circles on a piece of brown paper and label one "oil" and the other "water". 2. Place a drop of the oil and water in the appropriate circle. 3. Raise the paper up to the light. 4. Observe and describe the transparency of the spots you made. 5. Clean up and throw away your paper. V. Unknown Testing!!! 1. Each group will get an unknown 2. Perform each of the 4 organic tests on the unknown sample 3. Use physical observations (, odor, texture) to help figure out the unknown.
3 DATA: What solution is used to indicate if this molecule is present? What are these changing tests known as? TUBE 1 TUBE 2 TUBE 3 Food type Tap water Corn syrup Glucose solution solution What solution is used to indicate if this molecule is present? Food type Tap Water Starch Solution Potato Slice before Iodine after Iodine
4 III. Protein Test ---> Protein Test *What should you make sure to wear while conducting this test? *What should you do if you get any of the test reagents on your skin? What solutions are used to indicate if this molecule is present? Tube # TUBE 1 TUBE 2 Food type Tap water Egg white solution IV. Fat Test ---> Brown Paper Test What is used to indicate if this molecule is present? Food type Tap water Butter/Oil appearance appearance
5 V. Unknown Testing!!! Record the number of your unknown solution below. Conduct all four tests to identify if sugar, starch, protein, and/or fat are present. Record your results in the table below. CIRCLE your POSITIVE results. *Don't forget to record any observations about your unknown that might help you identify what is in it.* Unknown Test Type Sugar Starch Protein Test Fat Test # Test Test Unknown Result Conclusion Questions 1. What organic compound that we have studied was not tested for in this lab? Why wasn t it tested? 2. Why was water tested in each of the different organic food tests? What did it act as? 3. What number unknown did you have? What do you think it is and why?
Biomolecule: Carbohydrate
Biomolecule: Carbohydrate This biomolecule is composed of three basic elements (carbon, hydrogen, and oxygen) in a 1:2:1 ratio. The most basic carbohydrates are simple sugars, or monosaccharides. Simple
Figure 2. Figure 1. Name: Bio AP Lab Organic Molecules
Name: Bio AP Lab Organic Molecules BACKGROUND: A cell is a living chemistry laboratory in which most functions take the form of interactions between organic molecules. Most organic molecules found in living
EXERCISE 3 Carbon Compounds
LEARNING OBJECTIVES EXERCISE 3 Carbon Compounds Perform diagnostic tests to detect the presence of reducing sugars (Benedict s), starch (Lugol s), protein (Biuret), lipid (SudanIV) and sodium chloride
HW #1 Molecules of Life Packet
Name Hour Due: HW #1 Molecules of Life Packet Lab Molecule ID Chemistry Fats, carbs WS HW Page 1 Page 2 Your Points Total Points Possible 5 pts Macromolecules in Foods Lab Introduction: The food we eat
Identification of Organic Compounds Lab
Identification of Organic Compounds Lab Introduction All organic compounds contain the element carbon (C). Organic compounds usually also contain oxygen (O) or hydrogen (H) or both. They may also contain
Lab #4: Nutrition & Assays for Detecting Biological Molecules - Introduction
Lab #4: Nutrition & Assays for Detecting Biological Molecules - Introduction Most biological molecules fall into one of four varieties: proteins, carbohydrates, lipids and nucleic acids. These are sometimes
Name: Period: Date: Testing for Biological Macromolecules Lab
Testing for Biological Macromolecules Lab Introduction: All living organisms are composed of various types of organic molecules, such as carbohydrates, starches, proteins, lipids and nucleic acids. These
Chemical Tests For Biologically Important Molecules Do not write on this document
Chemical Tests For Biologically Important Molecules Do not write on this document Introduction The most common and important organic molecules found in living things fall into four classes: carbohydrates,
Introduction: Lab Safety: Student Name: Spring 2012 SC135. Laboratory Exercise #4: Biologically Important Molecules
FMCC Student Name: Spring 2012 SC135 Introduction: Laboratory Exercise #4: Biologically Important Molecules The major groups of biologically important molecules are: Carbohydrates, Lipids, Proteins and
For example, monosaccharides such as glucose are polar and soluble in water, whereas lipids are nonpolar and insoluble in water.
Biology 4A Laboratory Biologically Important Molecules Objectives Perform tests to detect the presence of carbohydrates, lipids, proteins, and nucleic acids Recognize the importance of a control in a biochemical
Macromolecule Virtual Lab
Part A Macromolecule Virtual Lab Go to the website: http://faculty.kirkwood.edu/apeterk/learningobjects/biologylabs.htm CARBOHYDRATES Scroll down to the bottom and click on Carbohydrate 1. What do carbohydrates
Organic Chemistry Worksheet
Organic Chemistry Worksheet Name Section A: Intro to Organic Compounds 1. Organic molecules exist in all living cells. In terms of biochemistry, what does the term organic mean? 2. Identify the monomer
McMush Lab Testing for the Presence of Biomolecules
Biology McMush Lab Testing for the Presence of Biomolecules Carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. These biomolecules are large carbon-based
Lab: Organic Compounds
Lab: Organic Compounds Name(s) Date Period Benchmark: SC.912.L.18.1: Describe the basic molecular structures and primary functions of the four major categories of biological macromolecules. Background:
Testing for the Presence of Macromolecules
5 McMush Lab Testing for the Presence of Macromolecules Carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. These macromolecules are large carbon-based
Lab 3 MACROMOLECULES INTRODUCTION I. IDENTIFICATION OF MACROMOLECULES. A. Carbohydrates
Lab 3 MACROMOLECULES OBJECTIVES Define macromolecule, vitamin, mineral, carbohydrate, monosaccharide, disaccharide, polysaccharide, lipid, protein, amino acid, calorie; Describe the basic structures of
Name: Per. Date: / 71 points MACROMOLECULE LAB: Testing for the Presence of Macromolecules
Name: Per. Date: / 71 points MACROMOLECULE LAB: Testing for the Presence of Macromolecules Introduction: There are four broad classes of macromolecules that can be found in living systems. Each type of
McMush Lab Testing for the Presence of Macromolecules
5 Testing for the Presence of Macromolecules Carbohydrates, lipids, proteins, and nucleic acids are organic molecules found in every living organism. These macromolecules are large carbon based structures.
Lab 2. The Chemistry of Life
Lab 2 Learning Objectives Compare and contrast organic and inorganic molecules Relate hydrogen bonding to macromolecules found in living things Compare and contrast the four major organic macromolecules:
Laboratory 3 Organic Molecules
Laboratory 3 Organic Molecules MATERIALS Distilled water, vegetable oil, and solutions of glucose, starch, and gelatin Dairy products (half and half, heavy cream and whole milk) Non-dairy soy and almond
Carbohydrates Chemical Composition and Identification
Carbohydrates Chemical Composition and Identification Introduction: Today, scientists use a combination of biology and chemistry for their understanding of life and life processes. Thus, an understanding
LAB 4 Macromolecules
LAB 4 Macromolecules Overview In addition to water and minerals, living things contain a variety of organic molecules. Most of the organic molecules in living organisms are of 4 basic types: carbohydrate,
Organic Compounds in the Foods
Organic Compounds in the Foods Purpose: This lab activity will help you understand the chemical composition (i.e., carbohydrates, proteins, and fats) of the foods that you eat. Materials we will be using:
ARE YOU WHAT YOU EAT? TEACHER HANDBOOK
ARE YOU WHAT YOU EAT? TEACHER HANDBOOK Alabama Course of Study: Science Biology: 1. Select appropriate laboratory glassware, balances, time measuring equipment, and optical instruments to conduct an experiment.
You Are What You Eat
An Investigation of Macromolecules Student Materials Introduction....2 Pre-Lab Questions.5 Lab Protocol..6 Post-Lab Questions and Analysis 9 Last updated: September 26 th, 2017 1 Introduction When deciding
Organic Molecule Composition of Milk: Lab Investigation
Name: Organic Molecule Composition of Milk: Lab Investigation Introduction & Background Milk & milk products have been a major food source from earliest recorded history. Milk is a natural, nutritionally
AP Biology Macromolecules
AP Biology Macromolecules Introduction: There are four broad classes macromolecules that can be found in living systems. Each type macromolecule has a characteristic structure and function in living organisms.
Macromolecules Materials
Macromolecules Materials Item per bench per class Test tubes 19 a bunch Benedict s reagent 1 bottle 6 Iodine bottle 1 bottle 6 Sudan IV bottle 1 bottle 6 Biuret s Bottle 1 bottle 6 250 ml beaker 1 6 heat
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE NAME: PERIOD: DATE: Building Background Knowledge: 1) SELECTIVELY PERMEABLE MEMBRANE: Every cell is surrounded by a selectively permeable membrane
of Life Chemical Aspects OBJ ECTIVESshould be able to: ENCOUNTERS WITH LIFE H" ~ ~O N-C-C H R OH After completing this exercise, the student
ENCOUNTERS WT LFE Chemical Aspects of Life C 20 C--O. /1 '\. O \/ '\./ C C / \. O / -, O \.1 C--C 1 O GLYCEROL After completing this exercise, the student OBJ ECTVESshould be able to: Define organic and
Name: Date Block Selective Permeability
LAB Name: Date Block Selective Permeability OBJECTIVES: Observe the selective permeability of an artificial membrane. Observe diffusion of substances across an artificial membrane. Devise a model for the
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE
LAB: DIFFUSION ACROSS A SELECTIVELY PERMEABLE MEMBRANE NAME: PERIOD: DATE: Building Background Knowledge: 1) SELECTIVELY PERMEABLE MEMBRANE: Every cell is surrounded by a selectively permeable membrane
6 The chemistry of living organisms
Living organisms are composed of about 22 different chemical elements. These are combined to form a great variety of compounds. Six major elements make up almost 99% of the mass of the human body, as shown
OCR (A) Biology A-level
OCR (A) Biology A-level Topic 2.2: Biological molecules Notes Water Water is a very important molecule which is a major component of cells, for instance: Water is a polar molecule due to uneven distribution
Biology 20 Laboratory Life s Macromolecules OBJECTIVE INTRODUCTION
Biology 20 Laboratory Life s Macromolecules OBJECTIVE To observe and record reactions between three classes of macromolecules in the presence of simple chemical indictors. To be able to distinguish positive
Name... Class... Date...
Required practical 4: Food tests Aiming for 8 Specification references: Required practical 4: Use qualitative reagents to test for a range of carbohydrates, lipids, and proteins. To include: Benedict s
2-2 Properties of Water
2-2 Properties of Water 1 A. The Water Molecule o o o Water is polar Hydrogen bonds form between water molecules Properties of Water: cohesion adhesion capillary action high specific heat ice floats good
3. What is used to test for the presence of simple reducing sugars such as monosaccharides?
Lab 7-1 Analysis and s 1. What is used to test for the presence of starch? 2. How can you tell by using this test that a substance contains starch? 3. What is used to test for the presence of simple reducing
Tests for Carbohydrates
Goals bserve physical and chemical properties of some common carbohydrates. Use physical and chemical tests to distinguish between monosaccharides, disaccharides, and polysaccharides. Identify an unknown
Digestive Enzyme Lab
Digestive Enzyme Lab Objectives 1. To describe the function of enzymes 2. To define: reactants, products, activation energy 3. To describe the enzymatic digestion of carbohydrates by salivary amylase 4.
BIOLOGY 1101 LAB 1: OSMOSIS & DIFFUSION. READING: Please read pages & in your text prior to lab.
BIOLOGY 1101 LAB 1: OSMOSIS & DIFFUSION READING: Please read pages 27-31 & 83-86 in your text prior to lab. INTRODUCTION: All living things depend on water. A water molecule is made up of an oxygen atom
You Are What You Eat
You Are What You Eat An Investigation of Macromolecules Student Materials Introduction....2 Pre-Lab Questions.6 Lab Protocol..7 Post-Lab Questions and Analysis 11 Last updated: 10/15/18 1 You Are What
Name Date Period. Go to:
Name Date Period In this online investigation, you will examine foods to determine what type of predominant organic compounds can be found in each. Make sure to read the whole paper and answer all questions.
Who took Kaleb s ipod? -- An organic compound mystery
Who took Kaleb s ipod? -- An organic compound mystery Dr. Jennifer Doherty, Dr. Ingrid Waldron and Dr. Lori Spindler, Department of Biology, University of Pennsylvania, copyright 2009 Adapted from Identity
Name Date Period. Macromolecule Virtual Lab. Name: Go to the website:
Macromolecule Virtual Lab Name: Go to the website: http://faculty.kirkwood.edu/apeterk/learningobjects/biologylabs.htm The most common organic compounds found in living organisms are lipids, carbohydrates,
Biology 13A Lab #13: Nutrition and Digestion
Biology 13A Lab #13: Nutrition and Digestion Lab #13 Table of Contents: Expected Learning Outcomes.... 102 Introduction...... 103 Activity 1: Food Chemistry & Nutrition.. 104 Activity 2: Parts of the Digestive
Testing for Biologically Important Molecules
Testing for Biologically Important Molecules General Principles There are four major classes of organic compounds found in living organisms - arbohydrates, Lipids, Proteins and ucleic Acids. The chemical
fossum/files/2012/01/10 Enzymes.pdf
http://www.laney.edu/wp/cheli fossum/files/2012/01/10 Enzymes.pdf Enzyme Catalysis Enzymes are proteins that act as catalysts for biological reactions. Enzymes, like all catalysts, speed up reactions without
DO NOW: What is a catalyst?
AGENDA ABSENT Block Nov 5 th /6 th -Week 13 TOPIC: Enzymes OBJ : 1-4 DO NOW: What is a catalyst? Science of Life EXT: Enzyme Lab DUE DATE: 11-10 DW: -----------------------------------------------------------------------------------------------------------------
Experiment 9 Amino Acids and Proteins
Experiment 9 Amino Acids and Proteins Proteins are very important biological molecules, with many possible functions. Enzymes are proteins that catalyze biological reactions. There are transport proteins
What is an atom? An atom is the smallest component of all living and nonliving materials.
What is an atom? An atom is the smallest component of all living and nonliving materials. It is composed of protons (+), neutrons (0), and electrons (-). The Periodic Table Elements are composed of all
Q1. We use enzymes in industry. These are some of the properties of enzymes:
Q1. We use enzymes in industry. These are some of the properties of enzymes: they work at low temperatures and this can save energy they work at atmospheric pressures and therefore use less expensive equipment
#9 - Digestion. Objectives: Prelab Activity. I Digestive System
#9 - Objectives: Observe and understand the process of emulsification Understand the digestion of fats by pancreatic lipase and the purpose of bile Understand the digestion of protein by pepsin and the
What is an atom? An atom is the smallest component of all living and nonliving materials.
What is an atom? An atom is the smallest component of all living and nonliving materials. It is composed of protons (+), neutrons (0), and electrons (-). The Periodic Table Elements are composed of all
Macromolecule stations. 6 stations
Macromolecule stations 6 stations 1. Sugar and protein paper pieces to build (with waters) 2. Fatty acid and nucleic acid paper pieces to build with (and water) 3. DNA model with several pieces removed
Review for Test #1: Biochemistry
Review for Test #1: Biochemistry 1. Know and understand the definitions and meanings of the following terms. Be able to write complete definitions for the terms in BOLD: Biology triglyceride metabolism
LAB 3: Biomolecules and Digestion
Page 3.1 LAB 3: Biomolecules and Digestion Food taken into our bodies must first be broken down by mechanical and chemical digestion before it can be absorbed and used as an energy source. The chemical
Diffusion across a Selectively Permeable Membrane
Diffusion across a Selectively Permeable Membrane Each cell is surrounded by a selectively permeable cell membrane Cell Membrane which regulates what gets into and out of the cell. A selectively permeable
GENERAL TESTS FOR CARBOHYDRATE. By Sandip Kanazariya
GENERAL TESTS FOR CARBOHYDRATE By Sandip Kanazariya Introduction Carbohydrates are of great importance to human beings. They are major part of our diet, providing 60-70% of total energy required by the
Biological molecules = Biomolecules = Compounds of life
Biological molecules = Biomolecules = Compounds of life Carbohydrates Proteins & Amino Acids Mono-saccharides Olego-saccharides Di-saccharides Poly-saccharides Lipids Oils & Fats Amino acids Proteins Enzymes
CHEMISTRY OF LIFE 13 MARCH 2013
CHEMISTRY OF LIFE 13 MARCH 2013 Lesson Description In this lesson, we revise: How molecules are classified The importance of water How to test samples for glucose and starch Key Concepts Terminology A
Lab 6: Cellular Respiration
Lab 6: Cellular Respiration Metabolism is the sum of all chemical reactions in a living organism. These reactions can be catabolic or anabolic. Anabolic reactions use up energy to actually build complex
Problem: What would happen to enzyme activity if enzymes are placed outside their normal conditions? Hypothesis:
Name: Date: Period: Honors Biology: Enzyme Lab Background information What would happen to your cells if they made a poisonous chemical? You might think that they would die. In fact, your cells are always
Arif Ullah - ITHS
INTERNATIONAL TURKISH HOPE SCHOOL 2017 2018 ACADEMIC YEAR CHITTAGONG SENIOR SECTION BIOLOGY HANDOUT BIOLOGICAL MOLECULES (ENZYMES) CLASS 9 Name :... Date:... c) Biological molecules Students will be assessed
Chemistry of food and FOOD GRAINS Build a simple calorimeter. Regina Zibuck
Chemistry of food and FOOD GRAINS Build a simple calorimeter Regina Zibuck rzibuck@wayne.edu Build and use a calorimeter (15 %) include calibration data in the 5 sheets. Written test (85 %) (Students are
Biochemistry. Chapter 6
Biochemistry Chapter 6 Game Plan for Today. - Collect your papers - Hand back quests - Go over Amoeba Sister Chart - Biochem Notes - Video Carbohydrate Lab Food Label Lab! Testing For Carbohydrates Benedict's
Chemical Aspects oflife.
Chemical Aspects oflife. Objectives, Define organic and inorganic compounds and describe a simple test to distingush one from the other Name the elements most often found in living organisms Describe the
Name a property of. water why is it necessary for life?
02.09.18 Name a property of + water why is it necessary for life? n Cohesion n Adhesion n Transparency n Density n Solvent n Heat capacity + Macromolecules (2.3 & some of 2.4) + Organic Molecules All molecules
Name: Date: Period: CSI: SPRING GROVE
Name: Date: Period: CSI: SPRING GROVE Due to your excellent background in biochemistry, you have been hired by Dr. Oliver Border of the Lancaster County Medical Examiner s Office to clear up a situation.
Name: There are two things that will determine which particles will pass through and which will not:
18 Diffusion and Osmosis in Living Systems Name: Problem: How do substances move into and out of cells? Introduction: In order for cells to carry on their life processes, they must take in materials and
9. Determine the mass of the fat you removed from the milk and record in the table. Calculation:
Chemistry 100 Instructor s Initials Name: Experiment 14: Biochemistry Analysis of milk for the lipids, carbohydrates, and proteins. A. Determining the % Fat in Whole Milk 1. Weigh a clean, dry, empty 50
REVISION: CHEMISTRY OF LIFE 19 MARCH 2014
REVISION: CHEMISTRY OF LIFE 19 MARCH 2014 Lesson Description In this lesson we revise: The Chemistry of Life Food tests Summary Inorganic Nutrients Water Solvent Medium in which chemical reactions occur
Guided Inquiry Skills Lab. Additional Lab 1 Making Models of Macromolecules. Problem. Introduction. Skills Focus. Materials.
Additional Lab 1 Making Models of Macromolecules Guided Inquiry Skills Lab Problem How do monomers join together to form polymers? Introduction A small number of elements make up most of the mass of your
Bio 6 Macromolecules Lab
Bio 6 Macromolecules Lab verview In addition to water and minerals, living things contain a variety of organic molecules. Most of the organic molecules in living organisms are of 4 basic types: carbohydrate,
(LM pages 91 98) Time Estimate for Entire Lab: 2.5 to 3.0 hours. Special Requirements
Laboratory 7 Chemical Aspects of Digestion (LM pages 91 98) Time Estimate for Entire Lab: 2.5 to 3.0 hours Special Requirements Incubation. Students should start these sections at the beginning of the
Name Group Members. Table 1 Observation (include details of what you observe)
Name Group Members Macromolecules, Part 1 - PROTEINS There are four classes of macromolecules that are important to the function of all living things. These include carbohydrates, lipids, proteins and
Exam 1 SC135 spring 2016 Page 1
xam 1 S135 spring 2016 Page 1 Name: ate: 1 There is a cumulative final in this course. 2 You may use a sentence out of your text book in a concept map. 3 Your PS response pad (aka: clicker) is important
LAB 5 - Enzymes BACKGROUND INFORMATION
LAB 5 - Enzymes BACKGROUND INFORMATION Chemical Reactions The cells of organisms, from bacteria to plants to animals, carry out hundreds to thousands of chemical reactions that must be properly coordinated
EXERCISE 5. Enzymes H amylase + starch + amylase-starch complex maltose+ amylase.
EXERCISE 5 Enzymes LEARNING OBJECTIVES Demonstrate enzyme activity by the hydrolysis of starch by amylase. Determine the effect of different temperatures on the rate of starch hydrolysis. Determine the
Ch 2 Molecules of life
Ch 2 Molecules of life Think about (Ch 2, p.2) 1. Water is essential to life. If there is water on a planet, it is possible that life may exist on the planet. 2. Water makes up the largest percentage by
Bridging task for 2016 entry. AS/A Level Biology. Why do I need to complete a bridging task?
Bridging task for 2016 entry AS/A Level Biology Why do I need to complete a bridging task? The task serves two purposes. Firstly, it allows you to carry out a little bit of preparation before starting
Competitive Inhibitor
is a substance that reduces the activity of an enzyme by entering the active site in place of the substrate whose structure it mimics. Competitive Inhibitor Identify the following molecule: Polysaccharide
FOOD AND DIET. Plants Plants can make their own food by photosynthesis. They mix Carbon Dioxide (CO 2 ) and water (H 2 O) to make sugar.
FOOD AND DIET All living things need food. Food is needed for energy and growth. Plants Plants can make their own food by photosynthesis. They mix Carbon Dioxide (CO 2 ) and water (H 2 O) to make sugar.
250-mL beakers. iodine solution metric ruler. 10-mL graduated cylinders pipettes. (Read the Procedure first to answer the Questions)
Detecting Diffusion Introduction A cell membrane is a selectively permeable barrier. Some particles can pass through the cell membrane while other particles are held back. Solutes that can move across
Who took Jerell s ipod? An organic compound mystery 1
Who took Jerell s ipod? An organic compound mystery 1 Jerell is a 10 th grade student who works at McDonald s on the weekends. While on break, Jerell was studying for his biology test and listening to
FOOD. Why do we need food? What's in our food? There are 3 trace elements, Iron (Fe), Copper (Cu) and Zinc (Zn).
Why do we need food? FOOD 1. As a source of energy keeps our cells and us alive. 2. To make chemicals for our metabolic reactions. 3. As raw materials for growth and repair of our cells and body. What's
9.A compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids
9.A compare the structures and functions of different types of biomolecules, including carbohydrates, lipids, proteins, and nucleic acids o o o Food is a good source of one or more of the following: protein,
Work in groups of 3 to 4 students (enough materials for 5 groups total)
Chemical and Physical Processes of Digestion Exercise 39A / 39 (begins page 597 in 9 th &10 th eds, page 595 in 11 th edition, page 599 in 12 th edition) Lab 7 Objectives Read lab Exercise 39A / 39 Do
Amylase: a sample enzyme
Amylase: a sample enzyme Objectives: After completion of this laboratory exercise you will be able to: 1. Explain the importance of enzymes in biology. 2. Explain the basic properties of an enzyme as a
Investigation: Enzymes
Investigation: Enzymes INTRODUCTION: What would happen to your cells if they made a poisonous chemical? You might think that they would die. In fact, your cells are always making poisonous chemicals. They
Qualitative chemical reaction of functional group in protein
Qualitative chemical reaction of functional group in protein Certain functional groups in proteins can react to produce characteristically colored products. The color intensity of the product formed by
2. In terms of appearance, what is the main difference between a monomer, dimer and a polymer?
Biology Ms. Ye Name Date Block Monomers vs. Polymers 1. The prefix mono- means one. The prefix di- means two. The prefix poly- means many. Based on the given definitions, label the pictures of paperclips
Enzymes - Exercise 3 - Rockville
Enzymes - Exercise 3 - Rockville Objectives -Understand the function of an enzyme. -Know what the substrate, enzyme, and the product of the reaction for this lab. -Understand how at various environments
DIFFUSON AND OSMOSIS INTRODUCTION diffusion concentration gradient. net osmosis water potential active transport
DIFFUSON AND OSMOSIS NAME DATE INTRODUCTION The life of a cell is dependent on efficiently moving material into and out of the cell across the cell membrane. Raw materials such as oxygen and sugars needed
MONDAY Review ( SL 2.5)
Enzymes 8.1 MONDAY Review ( SL 2.5) -Active site to which specific substrate binds -Enzymes are catalysts: bring about biochemical reactions! -Optimal environment: affected by ph, temp, and substrate concentration
Biomolecule Stations
AP Biology Biomolecule Stations Names Per. In this two-day activity, you will move through several different stations and learn about the four macromolecules in the biological world. Day 1: Modeling Carbohydrates
Diffusion and Osmosis
Diffusion and Osmosis Introduction: In this exercise you will measure diffusion of small molecules through dialysis tubing, an example of a semi permeable membrane. The movement of a solute through a semi
How Amylase Works. Copyright 2008 LessonSnips
How Amylase Works We chew our food to make the pieces smaller and saliva is added to make it softer and easier to swallow. Smaller softer pieces are easier to digest. To digest means to break down food
Macromolecule modeling lab
Macromolecule modeling lab Goal: Use ball and stick models to build some of the macromolecules that make up cells also see how complex and large these macromolecules can be Directions to read before starting:
Lab Activity 30. Digestive Enzymes. Portland Community College BI 233
Lab Activity 30 Digestive Enzymes Portland Community College BI 233 Cellular Reactions All molecular bonds have energy barriers that prevent spontaneous breakdown Enzymes lowering these activation energy