Exam 2 Review
1. Which of the following does not describe Eukaryotes?
a. Membrane- bound organelles
b. Plasma membrane
c. Single, circular loop of DNA
d. All of the above
e. None of the above
2. The Rough endoplasmic reticulum is responsible for ___________ synthesis
while the Smooth Endoplasmic reticulum is responsible for ___________
synthesis.
a. Ribosome, lipids
b. Proteins, lipids
c. Lipids, proteins,
d. Carbohydrates, ribosomes
e. None of the above
3. This organelle is involved in the process of turning solar energy into chemical
energy.
a. Mitochondria
b. Ribosome
c. Nucleus
d. Chloroplast
4. The nucleus controls cellular activities via __________.
a. Genes
b. Cytokinesis
c. Ribosomes
d. Lipids
5. What is the importance of cholesterol molecules embedded in the plasma
membrane?
a. Cell-to-cell recognition
b. Fluidity of the membrane
c. Stabilizes the phospholipids in the membrane
d. It is a carrier protein needed for active transport
e. Both A and D
f. Both B and C
6. Which of the following is not a type of passive transport?
a. Osmosis
b. Diffusion
c. Endocytosis
d. Facilitated diffusion
7. Which of the following is a type of active transport?
a. Sodium potassium pump
b. Exocytosis
c. Endocytosis
d. All of the above
e. Only two of the above
8. Active transport requires:
a. A transport protein
b. A concentration gradient
c. Osmosis
d. A hypertonic solution
9. An animal cell placed in a hypotonic solution will:
a. become plasmolyzed
b. become turgid
c. become flaccid
d. become lysed
10. Which of the following would occur if a plant cell were placed in a
hypertonic solution?
a. The plant cell’s vacuole would fill with water and develop a turgid
pressure.
b. The plant cell would neither gain nor lose water
c. The plant cell’s vacuole will lose water and the cell will experience
plasmolysis
d. The plant cell would burst from water intake
11. A membrane bound sac called a _____________, is used to transport substances
into and out of cells.
a. Lysosome
b. Pump
c. Vacuole
d. Vesicle
12. The process of removing waste from a cell is called ____________:
a. Tonicity
b. Exocytosis
c. Endocytosis
d. Diffusion
e. Osmosis
13. Which of the following is the balanced chemical equation for the process of
cellular respiration?
a. C6H12O2 +6O2 > 6CO2 +H2O +ATP
b. C6H12O6 + 3O2 > 3CO2 +6H2O +ATP
c. C6H12O6 +6O2 > 6CO2 +H2O +ATP
d. None of the above are correct
14. In cell respiration, where does glycolysis occur?
a. Matrix
b. Along the inner membrane of the mitochondria
c. Inter-membrane space
d. Cytosol outside the mitochondria
15. In cell respiration, where does the Kreb’s cycle occur?
a. Matrix
b. Along the inner membrane of the mitochondria
c. Inter-membrane space
d. Cytosol outside of the mitochondria
16. In cell respiration, where is the most ATP produced?
a. The ETC found along the inner membrane
b. The Kreb’s cycle found along the inner membrane
c. The Kreb’s cycle in the matrix
d. Glycolysis in the cytosol of the cell
17. Which of the following are reactants of cell respiration?
a. Glucose
b. Oxygen
c. Carbon dioxide
d. Water
e. More than one of the above
18. Which product(s) of photosynthesis is used during cell respiration?
a. CO2
b. H2O
c. C6H12O6
d. Both A and B
e. Both A and C
19. What does aerobic respiration require?
a. Oxygen
b. Carbon
c. Sunlight
d. All of the above
20. What are the products of glycolysis?
a. 2 pyruvate molecules
b. 2 ATP molecules
c. 2 NADH molecules
d. All of the above
21. Which of the following are the correct products of 1 turn of the Krebs cycle
per glucose molecule?
a. 2 ATP
b. 2 FADH2
c. 8 NADH
d. 6 CO2
e. All of the above
f. None of the above
22. What substance is produced by the oxidation of pyruvate and feeds into the
Kreb’s cycle?
a. Acetyl Co-A
b. NADH
c. FADH2
d. CO2
23. In aerobic cell respiration which generates the most ATP?
a. Substrate level phosphorylation
b. Oxidative phosphorylation
c. Lactic acid fermentation
d. A and B generate the same amount of ATP
24. A young girl, giving her dog a bath suddenly dies. She used a flea dip that
contains a chemical called rotenone. Her autopsy showed elevated levels of
NADH and low levels of NAD+ in her mitochondria. What part of cellular
respiration was affected by rotenone?
a. The ETC
b. The Kreb’s cycle
c. Glycolysis
d. All stages were affected
25. Catabolic processes
a. Make complex molecules from simpler ones
b. Break down complex molecules into simpler ones
c. Occur only in autotrophs
d. Occur only in heterotrophs
e. None of the above
26. In an endergonic reaction:
a. The reactants contain less free energy than the products
b. The reactants contain more free energy than the products
c. No activation energy s required
d. None of the above
27. In the following reaction, which side has greater free energy if the value of
delta G is NEGATIVE.
2H2 + O2 > 2H2O + energy (heat)
a. the left side
b. the right side
c. both sides are equal
28. The ___________ is the region of an enzyme where substrate molecules bind and
undergo a chemical reaction.
a. Active site
b. Reaction site
c. Substrate
d. None of the above
29. Which of the following does not affect the speed of enzymatic reactions?
a. Temperature
b. pH
c. substrate concentration
d. All of the above affect the speed of an enzymatic reaction
30. Which is the correct balanced equation for the process of photosynthesis?
a. 6CO2 + 6H2O + solar energy > C6H12O6 + 6O2
b. 6CO2 +3H2O + solar energy > 3C6H12O6 + 6O2
c. CO2 + H2O + solar energy > C6H12O6 + 6O2
31. Photosynthesis takes place in the membranes of small sacs called
a. Thylakoids
b. Grana
c. Photosystems
d. Photons
32. The light reaction of photosynthesis does not include
a. Chemiosmosis
b. Oxygen liberation
c. Charge separation
d. Electron transport
33. What is the terminal electron acceptor at the end of the ETC?
a. NAD+
b. NADH
c. Oxygen
d. FAD
34. As electrons move along the ETC/ETS, what is pumped across the inner
membrane of the mitochondria?
a. Hydrogen atoms
b. Oxygen atoms
c. Electrons
d. Both A and C
35. In prokaryotic cells, which phase would be unaffected by the lack of
mitochondria?
a. Kreb’s cycle
b. Calvin cycle
c. ETC
d. Glycolysis
36. The dark reaction in photosynthesis is limited by
a. CO2, temperature, and light
b. CO2, light, and water
c. Water, temperature, and CO2
d. Oxygen, water, and temperature
37. In theory, a plant kept in total darkness could still manufacture glucose, if it
were supplied with which molecules?
a. CO2
b. ATP
c. NADPH
d. All of the above
38. During what stage of photosynthesis is O2 released?
a. Light independent reactions
b. The light-dependent reactions involving photosystems I and II
c. Carbon fixation
d. O2 is not produced during photosynthesis
39. The pigment molecules responsible for photosynthesis are located in the
a. Mitochondria
b. Cytoplasm of the cell
c. Stroma of the chloroplast
d. Thylakoid membrane of the chloroplast
e. All of the above
40. Both carotenoids and chlorophylls:
a. Absorb photons of all energy ranges
b. Are pigments
c. Both A and B
d. Neither A or B
41. During what stage of photosynthesis are ATP and NADPH converted to ADP +
Pi and NADP+?
a. The light-dependent reactions
b. The light-independent reactions
c. Both
d. Neither
42. Water vapor exits and CO2 enters a leaf through the
a. photons
b. Grana
c. Stomata
d. Stroma
43. What energy-rich organic compound is produced as a result of the Calvin
cycle?
a. NADPH
b. CO2
c. ATP
d. H2O
e. Glucose
44. During photosynthesis, photons raise electrons to higher energy levels.
These excited electrons belong to what compound?
a. H2O
b. ATP
c. RuBP
d. Chlorophyll
e. Glucose
45. Which of the following occurs during the light-dependent reactions of plants?
a. Electron transport
b. Chemiosmosis
c. Splitting of water
d. All of the above
e. None of the above
46. The oxygen that is released as O2 during photosynthesis came from
____________ molecules?
a. Carbon dioxide
b. Water
c. Glucose
d. ATP
47. Light is required for the light-dependent reactions because
a. It is the source for electrons
b. It splits the water molecules
c. It energizes the electrons in the reaction center
d. It splits ATP molecules which generates the energy necessary to
power the light independent reactions
e. None of the above
48. T/F: The Golgi apparatus holds cellular waste products and materials
considered harmful for the cell.
49. T/F?: Simple diffusion is the movement of molecules from areas of their
lowest concentration to areas of their highest concentration.
50. T/F?: During aerobic respiration, FADH2 is produced in the Kreb’s cycle.
51. T/F: If the extracellular fluid surrounding a cell is hypotonic, then the
cytoplasm within the cell is relatively hypotonic.
52. T/F? The second law of thermodynamics states that the total energy of an
isolated system is constant; energy can be transformed from one form to
another, but cannot be created or destroyed
53. T/F: In an endergonic reaction, the delta G has a positive value because the
products have a higher energy than the reactants.
54. T/F: A competitive inhibitor mimics the substrate and competes for the
active site.
55. T/F: A competitive inhibitor binds to the enzyme at a location away from the
active site and alters the conformation of the enzyme so that the active site is
no longer functional.
56. T/F: CO2 Fixation occurs within the stroma of the chloroplast.
57. T/F: A cell’s supply of ADP, P, and NAD+ is limited. When all of the cell’s
NAD+ has been converted to NADH, glycolysis and the Kreb’s cycle would
shut down.