Question: Glycogen stored in muscles can be “mobilized” to supply metabolic energy by hydrolyzing individual glucose subunits from the polymer. What other organ has a major function of storing glycogen?
A. large intestine
B. stomach
C. brain
D. liver
Question: In human cells such as muscle tissue, the product of anaerobic respiration is:
A. pyruvate.
B. ethanol.
C. FADH2.
D. acetic acid.
E. lactic acid.
Question: Animals breathe in air containing oxygen and breathe out air with less oxygen. The consumed oxygen is used:
A. as an electron acceptor in the respiratory electron transport chain.
B. in photosynthesis.
C. in the Krebs cycle.
D. in the conversion of pyruvate to acetyl Co-A.
E. in the glycolysis pathway.
Question: True or False: even though the full oxidation of glucose is exergonic, some of the steps in the involved pathways are endergonic.
Question: Consulting Figure 7.1 if necessary, during which stage(s) of cellular respiration is(are) carbon dioxide released?
A. stage 1 only
B. stages 3 and 4
C. stage 3 only
D. stages 1 and 2
E. stages 2 and 3