Cell Transport Unit Test

Transcription

1 Cell Transport Unit Test ~Please DO NOT write on the test~ I CAN describe the parts of cells. 1. The ideas that all living things are composed of cells come from other cells defines: a. Central dogma b. The laws of inheritance c. Organelle theory d. Inheritance of acquired characteristics e. Cell Theory 2. You would expect a cell with an extensive Golgi apparatus to a. make a lot of ATP (energy) b. secrete a lot of material c. move actively d. perform photosynthesis e. store large quantities of food 3. The function of the nucleolus is a. To manufacture polypeptides b. To help manufacture ribosomes c. Intracellular digestion d. To store chromatin e. To produce hydrogen peroxide 4. A cell has mitochondria, ribosomes, smooth ER, and other parts. Based on this information, it could NOT be a. a cell from a pine tree b. a grasshopper cell c. a yeast (fungus) cell d. a bacterium e. actually, it could be any of the above 5. The of a mitochondrion is/are an adaptation that increases the surface are & enhance a mitochondrion s ability to produce ATP. a. Stroma b. Grana c. Intermembrane space d. Cristae e. Matrix 6. The stroma is the a. Thick fluid enclosed by the inner chloroplast membrane. b. Watery fluid enclosed by the inner membrane of a mitochondrion. c. Space between the inner and outer membranes of a chloroplast, d. Space between the inner and outer membranes of a mitochondrion. e. Fluid within the grana 7. Cilia differ from flagella in that a. Cilia are composed of microfilaments & flagella are composed of intermediate filaments. b. Cilia contain 9 microtubule doublets surrounding a central pair of microtubules; flagella contain only 9 microtubule doublets. c. The protein filaments of cilia are naked ; those of flagella are wrapped in an extension of the cell membrane. d. Cilia are typically more numerous & shorter than flagella.

2 8. Organelles involved in energy conversion are the a. rough ER and Golgi apparatus b. nucleus and smooth ER c. nucleus and chloroplast d. lysosome and ribosome e. mitochondrion and chloroplast 9. Which of the following consists of prokaryotic cells? a. Plants and animals b. Bacteria and archaea c. Plants, fungi, bacteria, & archaea d. Animals e. Plants, bacteria, and archaea 10. All of the following statements would be supported by the cell theory EXCEPT a. All living things are made of cells. b. All cells come from other cells. c. The cell is the basic functional unit of an organism. d. Cells reproduce to form additional cells. e. Cells may grow to an unlimited size. 11. Which of the following statements best describes an organism s attempt to maintain CELLULAR homeostasis? a. a flowering plant bends towards the light b. a paramecium s contractile vacuole expels excess water from a cell. c. a wren lays three eggs in its nest d. a pup growls when a litter mate attempts to take its bone. e. an earthworm s DNA is replicated 12. Which of the following structures would be used to identify a prokaryotic cell? a. cell membrane, nucleus, and DNA b. cell wall, flagella, and chloroplasts c. cytoplasm, smooth ER, and rough ER d. mitochondria, Golgi body, and lysosomes e. cell membrane, ribosomes, and a chromosome 13. In a study of a cheek cell reproduction, it is noticed that genetic material is not being divided equally. A cell structure that could account for this mistake could be the a. ER b. vacuoles c. centrioles d. nucleolus e. mitochondria 14. Plant cells contain both a cell wall and a cell membrane. What is the composition of the cell wall, and where is it located in relation to the cell membrane? a. cellulose, inside the cell membrane b. glucose, inside the cell membrane c. glucose, outside the cell membrane d. cellulose, outside the cell membrane

3 15. Which of the following correctly matches a structure with its function? a. mitochondria photosynthesis b. nucleus cellular respiration c. vacuole storage d. chloroplast cellular respiration e. lysosome movement I CAN describe life processes at the cellular level by describing how molecules enter and leave the cell. 16. To enter or leave a cell, substances must pass through a. the Golgi apparatus b. a ribosome c. the nucleus d. the plasma membrane 17. The movement of molecules from an area of higher concentration to an area of lower concentration is called a. diffusion b. endocytosis c. catalysis d. active transport 18. Phospholipid molecules in a membrane are arranged with their on the exterior and their on the interior. a. hydrophobic heads.hydrophilic tails b. hydrophilic heads hydrophobic tails c. nonpolar heads polar tails d. hydrophobic tails hydrophilic heads e. hydrophilic tails hydrophobic heads 19. In osmosis, water always moves towards the solution, that is, toward the solution with the solute concentration. a. isotonic.greater b. hypertonic greater c. hypertonic lesser d. hypotonic greater e. hypotonic lesser 20. Facilitated diffuision uses energy. True or False? a. True b. False 21. Diffusion of water across a selectively permeable membrane is called a. active transport b. osmosis c. exocytosis d. passive transport e. facilitated diffusion 22. A plant cell is placed in a solution whose solute concentration is twice as great as the concentration of the cell cytoplasm. The cell membrane is selectively permeable, allowing water but not the solutes to pass through. What will happen to the cell? a. No change b. The cell will shrivel because of osmosis. c. The cell will swell because of osmosis. d. The cell will shrivel because of active transport of water. e. The cell will swell because of active transport of water.

4 23. Red blood cells have a salt content of 0.9%. When a microbiologist places red blood cells in pure water, osmosis occurs. What net movement of a substance occurs in this instance of osmosis? a. water molecules move out of the cells b. water molecules move into the cells. c. salt ions move out of the cells. d. salt ions move into the cells. 24. Which key factor distinguishes organic compounds from inorganic compounds? a. organic compounds contain carbon. b. organic compounds contain hydrogen c. organic compounds provide energy for cells d. organic compounds are the building blocks of cells 25. The movement of water across a selectively permeable membrane is known as a. exocytosis c. endocytosis b. phagocytosis d. osmosis 26. A substance that moves across a cell membrane without using the cell s energy tends to move a. away from the area of equilibrium b. away from the area where it is less concentrated c. away from the area where it is more concentrated d. toward the area where it is more concentrated 27. Which of the following is an example of ACTIVE TRANSPORT? a. facilitated diffusion b. osmosis c. diffusion d. none of the above 28. Osmosis uses energy. True or False? a. True b. False 29. Which of the following would diffuse through a cell membrane the most easily? a. a large polar molecule b. a large nonpolar molecule c. a small polar molecule d. a small nonpolar molecule 30. A nursing infant is able to obtain disease-fighting antibodies, which are large protein molecules, from its mother s milk. These molecules probably enter the cells lining the baby s digestive tract via a. osmosis b. passive transport c. exocytosis d. diffusion e. endocytosis

5 31. Zoologists discovered that the blood cells of a certain African lungfish were much slower to swell or shrink with water when faced with changes in blood solute concentration, a useful adaptation to drought and dehydration. The researchers suspected that this might have something to do with the number of in the blood cells. a. phospholipids b. aquaporins (proteins that transport water) c. ATPs d. enzymes 32. A freshwater paramecium is placed in salt water. Which of the following events would most likely occur? (Ask yourself where the water in the paramecium is going!!) a. an increase in the action of its contractile vacuole b. swelling of the cell until it becomes turgid c. swelling of the cell until it bursts d. shriveling of the cell 33. A manufacturing company dumps its wastes into a nearby pond. One of the wastes is found to paralyze the contractile vacuoles of certain protists. A biologist looking at these organisms would find that these protists a. Have lost water & shrunk. b. Have gained water & burst. c. Have died of malnutrition d. Have died because wastes have built up in the cytoplasm e. Are surviving but are unable to reproduce 34. The molecules responsible for membrane transport are a. Steroids b. ATP c. Carbohydrates d. Proteins 35. In lab, you use a special balloon that is permeable to water but not sucrose to make an artificial cell. The balloon is filled with a solution of 20% sucrose and 80% water and is dropped in a beaker containing a solution of 40% sucrose and 60% water. Which of the following will occur? a. Water will leave the balloon b. Water will enter the balloon c. Sucrose will leave the balloon d. Sucrose will enter the balloon 36. Sodium, calcium, and potassium would be transported into a cell using which type of transport? a. endocytosis b. passive c. osmosis d. exocytosis

6 For questions using the following answer choices to tell describe each picture: A. Hypertonic B. Hypotonic C. Isotonic Matching Match the direction of net movement to its description for questions The direction of movement choices may be used more than one. 40. Simple diffusion B. Active Transport 41. Moves solutes against the concentration C. Osmosis gradient D. Passive Transport 42. Diffusion with the help of a transport protein E. Facilitated Diffusion 43. Diffusion of water 44. How oxygen and carbon dioxide enter and leave cells (small non-polar molecules) 45. Helped by aquaporins 46. Endocytosis Label the following cell membrane parts that are important during cell transport using the following answer choices for questions A. protein channel B. Carbohydrate chain C. Hydrophilic Head D. Hydrophobic tail