1)Which is the correct equation for anaerobic respiration in humans?
A) glucose + lactic acid ? carbon dioxide + water
B) glucose ? lactic acid + carbon dioxide
C) glucose ? lactic acid
2. Why does anaerobic respiration occur during hard exercise?
A) There may be insufficient oxygen supplied to the muscle cells
B) Carbon dioxide builds up in the respiring muscle cells
C) Anaerobic respiration releases more energy from glucose than aerobic respiration
3. During which metabolic stage is glucose broken down to pyruvate?
A) Glycolysis
B) The citric acid cycle
C) The electron transport chain
D) Oxidative phosphorylation
4. When energy-depleted elements associated with a proton are accepted by an organic molecule, the process is called
A) fermentation
B) anaerobic
C) aerobic
D) catabolism
5. An example of anaerobic would be
A) production of sulfates from H2S
B) production of methane by methanogens
C) glycolysis by purple bacteria
D) utilization of methane by methanogens
6. During the oxidation of glucose, a net gain of ATP only occurs under aerobic conditions.
A) True
B) False
7. The usefulness of fermentation as a means of deriving energy is limited because
A) it cannot generate enough ATP
B) it produces too much NH2
C) the end products are toxic to the producer
D) it uses more energy than it produces
8. Which of the following is not a product of fermentation?
A) CO2
B) O2
C) ethanol
D) lactate
E) all of the above are products of fermentation
9. The proper sequence of stages in glycolysis is
A) glucose priming, cleavage and rearrangement, oxidation, ATP generation
B) cleavage and rearrangement, glucose priming, ATP generation, oxidation
C) glucose priming, oxidation, cleavage and rearrangement, ATP generation
D) ATP generation, oxidation, glucose priming, cleavage and rearrangement
E) oxidation, cleavage and rearrangement, ATP generation, glucose priming
10. Catabolic processes
A) make complex molecules from simpler ones
B) break complex molecules into simpler ones
C) occur only in autotrophs
D) occur only in heterotrophs
E) none of the above
11. What substance is regenerated by fermentation?
A) O2
B) NAD+
C) acetyl-CoA
D) ATP
E) glucose
12. Which of the following is a multienzyme complex?
A) glyceraldehyde-3-phosphate (G3P)
B) NAD+
C) FAD+
D) pyruvate dehydrogenase
E) all of the above
13. Which of the following organisms carries out cellular respiration?
A) a corn plant
B) a dog
C) a yeast
D) a bacterium
E) all of the above
14. Oxidizing which of the following substances yields the most energy?
A) proteins
B) glucose
C) fatty acids
D) alcohol
E) water
15. The oxidation of glucose to two molecules each of pyruvate, ATP, and NADH is called ________ and occurs in the ________.
A) glycolysis; cytoplasm
B) fermentation; cytoplasm
C) the Krebs cycle; matrix of the mitochondrion
D) anaerobic respiration; cytoplasm
E) the respiratory electron transport chain; cristae of the mitochondrion