Download AP BIOLOGY QUIZ 2

AP BIOLOGY QUIZ 2
1. Stomata play an important role in the homeostasis of a plant. Which statement regarding
stomata is true?
a. Stomata control the concentration of gases in the plant.
b. When water concentrations are low in the plant, stomata will open.
c. Gases are moved through the stomata via active transport.
d. Gibberellins control the opening and closing of the stomata.
2. Two different methods of thermoregulation have evolved in animals: endothermy and
ectothermy. Which of the following statements is incorrect regarding endotherms?
a. Endotherms burn more calories than ectotherms of the same mass.
b. Endotherms are able to be at maximum metabolism whenever necessary.
c. Endotherms are able to maintain an internal temperature within a range of about 1⁰C.
d. Warm-blooded animals may go long periods without eating.
3. In chemical reactions, molecules are both oxidized and reduced. Which of the following
is an adequate description of the chemical reaction that occurs during photosynthesis?
a.
b.
c.
d.
H2O is reduced when it is converted to O2.
CO2 is oxidized when it is converted into a sugar.
H2O is the reducing agent because it donates an electron.
CO2 is the reducing agent because it accepts an electron.
4. Cyclic photophosphorylation likely evolved prior to non-cyclic photophosphorylation.
Why is this cyclic energy flow still important in photosynthetic organisms?
a. It produces the majority of ATP required by the cell.
b. It produces additional ATP to fuel the Calvin cycle.
c. It produces glucose, while non-cyclic energy flow produces only ATP.
d. It does not require chemiosmosis, as in non-cyclic flow.
5. During cellular respiration, at what point is oxygen used?
a.
b.
c.
d.
Oxygen is a product of the citric acid cycle.
Oxygen is the final electron acceptor in the electron transport chain.
Oxygen is used in the transformation of glucose into pyruvate.
Oxygen donates electrons to start the electron transport chain.
6. As seen in the below equation, purple and green bacteria use hydrogen sulfide as an
energy source.
CO2 + 2H2S  CH2O + H2O + 2S
Is this equation more similar to photosynthesis or cellular respiration?
a. Cellular respiration because carbon dioxide is a reactant and water is a product.
b. Photosynthesis because carbon dioxide has been fixed.
c. Cellular respiration because energy is not released.
d. Photosynthesis because carbon dioxide is a reactant and water is a product.
7. Most CO2 from catabolism is released during which process?
a.
b.
c.
d.
Glycolysis
The citric acid cycle
The Calvin cycle
Oxidation of pyruvate
8. Which statement is true about an herbicide that disrupts the action of photosystem I?
a. No ATP will be created.
b. Oxygen will not be released.
c. Additional CO2 will be required for the light reactions to continue.
d. NADP cannot be reduced to NADPH.
9. Chloroplasts and mitochondria both possess internal membranes. Which of the
following is true regarding these membranes?
a. These membranes contain the gaseous products of photosynthesis and cellular
respiration.
b. Enzymes embedded in these membranes catalyze the synthesis and hydrolysis of
glucose.
c. Proton gradients develop across these membranes and power ATP synthesis.
d. These membranes are vestiges of pre-symbiotic development and serve no purpose.
10. Cellular respiration can be broken down into two categories: aerobic and anaerobic.
Which of the following correctly contrasts the two processes?
a.
b.
c.
d.
Aerobic respiration creates less ATP than anaerobic respiration.
Anaerobic respiration uses chemiosmosis while aerobic respiration does not.
Aerobic uses an electron transport chain while anaerobic respiration does not.
Aerobic respiration creates CO2 as a product while anaerobic respiration does not.