Name:________________________________ Test #2
Bio 092
Summer 2005
Multiple choice and
True/False. Choose the best answer for the following questions.
_____1. The cytoskeleton component used to move vesicles around the cell
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Cilia
_____2. The cytoskeleton structure that participates in mitosis
A. Cleavage furrow
B. Spindle apparatus
C. Nucleolus
D. A and B
E. All of the above
_____ 3. These proteins are involved in muscle contraction
A. dynein and kinesin
B. dystrophin and tubulin
C. actin and tubulin
D. actin and myosin
_____ 4. These are microfilament extensions of the plasma membrane that increase the
surface area to aid in absorption
A. microvilli
B. flagella
C. cilia
D. lamellipodia
_____ 5. Proteins of the plasma membrane are involved in the following cell functions
EXCEPT:
A. ATP synthesis
B. Cell-cell recognition
C. Metabolic activity
D. Transport
_____ 6. These are layered under the plasma membrane to provide strength to the cell
A. Microfilaments
B. Microtubules
C. Intermediate filaments
D. Cilia
_____ 7. Plasma membranes are made up of:
A. phospholipids
B. proteins
C. cholesterol
D. A and B
E. All of the above
_____ 8. When both sides of a membrane have reached equilibrium, they are:
A. hypotonic
B. hypertonic
C. isotonic
D. acidic
_____ 9. The transport of water across a membrane is:
A. facilitated diffusion
B. osmosis
C. active transport
D. diffusion
_____ 10. An animal cell is submerged in a hypertonic solution of salt water. If water is
allowed to move unchecked, what will happen to it?
A. It will burst
B. It will shrivel
C. Nothing
_____ 11. The exchange of oxygen and carbon dioxide in the lung is an example of:
A. osmosis
B. active transport
C. facilitated diffusion
D. passive transport
_____ 12. A concentration gradient is formed by:
A. active transport
B. facilitated diffusion
C. passive transport
D. osmosis
_____ 13. Active transport of hydrogen ions:
A. makes ATP
B. keeps lysosomes acidic
C. keeps the stomach acidic
D. All of the above
______ 14. Transport of substances into the cell via clathrin coated pits is called:
A. macrocytosis
B. pinocytosis
C. phagocytosis
D. receptor-mediated endocytosis
_____ 15. Cell signaling usually ends in the activation of
A. receptors
B. transcription factors
C. ligands
D. polymerases
_____ 16. This part of the cell is where glycolysis takes place
A. Mitochondrial matrix
B. cristae
C. cytoplasm
D. stroma
_____ 17. This part of the cell is where the electron transport chain is located
A. cristae
B. thylakoid membrane
C. mitochondrial matrix
D. A and B
E. All of the above
_____ 18. The total number of ATP produced from one molecule of glucose during
cellular respiration is:
A. 2
B. 36
C. 38
D. 40
_____ 19. The molecule that binds acetic acid to transport it between glycolysis and the
Krebs cycle is:
A. NAD
B. Coenzyme A
C. Acetyl CoA
D. ADP
_____ 20. The reactants of cellular respiration are:
A. carbon dioxide, sunlight and water
B. oxygen, water and ATP
C. oxygen and glucose
D. carbon dioxide, water and ATP
_____ 21. The products of cellular respiration are:
A. oxygen, water and ATP
B. carbon dioxide, water and ATP
C. oxygen and glucose
D. carbon dioxide, glucose and water
_____ 22. The molecule that acts as an electron acceptor during photosynthesis to
bring electrons to the electron transport chain is:
A. NAD
B. NADP
C. oxygen
D. NADH
_____ 23. Chemical reactions that involve the transfer of electrons are:
A. fermentation reactions
B. oxidation-reduction reactions
C. phosphorylation reactions
D. nuclear reactions
_____ 24. The steps of cellular respiration occur in the following order:
A. glycolysisà electron transport chain à acetyl coA à krebs cycle
B. krebs cycle à acetyl coA à glycolysis à electron transport chain
C. glycolysis à krebs cycle à electron transport chain à acetyl coA
D. glycolysis à acetyl CoA à krebs cycle à electron transport chain
______ 25. The final electron acceptor at the bottom of the electron transport chain is:
A. NADP
B. water
C. oxygen
D. NAD
_____ 26. In the Krebs cycle, acetic acid is broken down to:
A. hydrogen
B. carbon dioxide
C. oxygen
D. water
_____ 27. Potential energy is:
A. the energy an object has because of its location
B. the capacity to perform work
C. created when an object is moved against an opposing force
D. a measure of disorder or randomness
_____ 28. Animals are an example of:
A. autotrophs
B. chemotrophs
C. heterotrophs
D. thermophiles
_____ 29. Enzymes speed up chemical reactions
A. True
B. False
_____ 30. The molecule that specifically binds an enzyme is called its:
A. reactant
B. substrate
C. solute
D. ligand
_____ 31. An enzyme inhibitor that binds to a site other than the active site is called:
A. direct inhibitor
B. active inhibitor
C. indirect inhibitor
D. inactive inhibitor
______ 32. Penicillin is an enzyme inhibitor
A. True
B. False
_____ 33. Fermentation shares which step with cellular respiration?
A. Electron transport chain
B. Glycolysis
C. Krebs cycle
D. None of the above
_____ 34. Fermentation has a net yield of how much ATP?
A. 2
B. 4
C. 36
D. 38
_____35. Energy from the electron transport chain is directly used to do what?
A. pump hydrogen across a membrane
B. make ATP
C. make ADP
D. pump electrons across a membrane
_____ 36. The enzyme that makes ATP is called:
A. ATP decarboxylase
B. ADP synthase
C. ATP synthase
D. Bob
_____ 37. Humans can undergo this type of fermentation:
A. alchoholic
B. lactic acid
C. pyruvic acid
D. humans cannot undergo fermentation
_____ 38. Facultative aerobes cannot live without oxygen
A. True
B. False
_____ 39. Photosynthetic pigments are found in which part of the plant cell?
A. stroma
B. stoma
C. thylakoid membrane
D. mesophyll
_____ 40. Which photosynthetic pigment is protective to the plant?
A. chlorophyll a
B. chlorophyll b
C. chlorophyll c
D. carotenoids
_____ 41. Which photosynthetic pigment funnels photons to chlorophyll a?
A. chlorophyll b
B. carotenoids
C. chlorophyll c
D. A and B
E. All of the above
_____ 42. The reactants of photosynthesis are:
A. oxygen, carbon dioxide and sunlight
B. water, oxygen and sunlight
C. carbon dioxide, water and sunlight
D. water, oxygen and carbon dioxide
_____ 43. The products of photosynthesis are:
A. G3P and oxygen
B. G3P and carbon dioxide
C. water and oxygen
D. ATP and water
_____ 44. Plants appear green because:
A. they absorb green light
B. they absorb yellow and blue light
C. they reflect green light
D. they reflect yellow and blue light
_____ 45. The order of the steps in photosynthesis are:
A. water-splitting photosystem à NADPH producing photosystem à calvin cycle
B. NADPH producing photosystem à water-splitting photosystem à calvin cycle
C. Calvin cycle à NADPH photosystem à water-splitting photosystem
D. Water-splitting photosystem à Calvin cycle à NADPH photosystem
_____ 46. During the light reactions of photosynthesis, what molecule is split to provide
electrons?
A. NADPH
B. NAD
C. Water
D. Oxygen
_____ 47. Carbon dioxide is used in which part of photosynthesis?
A. Light reactions
B. NADPH-producing photosystem
C. Water-splitting photosystem
D. Calvin cycle
_____ 48. Plants that store carbon dioxide in an intermediate form during the night, and
then perform photosynthesis during the day while their pores are closed are
called:
A. C3 plants
B. C4 plants
C. C5 plants
D.
_____ 49. The process of cellular division that creates two genetically identical daughter
cells is:
A. binary fission
B. meiosis
C. mitosis
D. cloning
_____ 50. A human haploid cell has how many chromosomes?
A. 46 individual chromosomes
B. 23 individual chromosomes
C. 46 pairs of chromosomes
D. 23 pairs of chromosomes
_____ 51. Asexual reproduction involves the fusion of sperm and egg
A. True
B. False
_____ 52. The process of creating haploid cells is called:
A. binary fission
B. mitosis
C. meiosis
D. cloning
_____ 53. The order of the cell’s life cycle is:
A. G1
à
B.
C. M
à
D. G1 à M à G2 à S
_____ 54. The order of the stages of the M phase are:
A. prophase à anaphase à metaphase à telophase/cytokinesis
B. metaphase à prophase à telophase/cytokinesis à anaphase
C. prophase à metaphase à anaphase à telophase/cytokinesis
D. telophase/cytokinesis à metaphase à anaphase à prophase
_____ 55. DNA synthesis starts at the end of the chromosome and continues from left to
right until the entire DNA strand is copied.
A. True
B. False
______ 56. During this stage of mitosis, the chromosomes line up in the center of the cell
A. prophase
B. metaphase
C. telophase
D. anaphase
_____ 57. During this stage of mitosis, the sister chromatids split apart and move to opposite sides of the cell
A. anaphase
B. metaphase
C. prophase
D. telophase
_____ 58. During this stage of meiosis, crossing over occurs
A. prophase II
B. anaphase I
C. prophase I
D. anaphase II
_____ 59. In meiosis, sister chromatids for each chromosome pair join up to form a:
A. doublet
B. tetrad
C. quadrad
D. trisomy
_____ 60. After meiosis I, the two daughter cells have identical genetic information
A. True
B. False