The primary function of the electron transport chain is to:
a. initiate the glycolysis reaction and produce ATP.
b. oxidize carbohydrates, fats, and proteins.
c. produce ATP in the absence of oxygen.
d. shuttle electrons from NADH and FADH to rephosphorylate ATP.
Q. 2It is estimated that about ____ of adults who record food intake underreport it.
A) one-fourth
B) one-third
C) half
D) two-thirds
Q. 3The most important carriers for electrons in oxidation-reduction reactions are:
a. ADP and ATP.
b. CrP and ATP.
c. NAD and FAD.
d. GDP and GTP.
Q. 4Those who are ____ active need over 50 kcal/kg/d.
A) lightly
B) moderately
C) heavily
D) exceptionally
Q. 5The process of giving up electrons is called:
a. oxidation.
b. reduction.
c. dehydrogenation.
d. hydrogenation.
Q. 6It is estimated that sedentary people use about ____ kilocalories of energy per kilogram body weight daily.
A) 20
B) 25
C) 30
D) 35
Q. 7The rate-limiting enzyme associated with the Krebs cycle is:
a. lactate dehydrogenase (LDH).
b. creatine kinase (CK).
c. phosphofructokinase (PFK).
d. isocitrate dehydrogenase (IDH).