Question

38) Each time pyruvic acid enters the Krebs cycle

A) 3 molecules of carbon dioxide is liberated B) the molecule of carbon dioxide leave the mitochondria and diffuse through the cytosol to the plasma C) 2 molecules of carbon dioxide are liberated D) A and B E) B and C

Electron carriers in the electron transport chain (My answer E)

1. cytochromes b,c,a

2. iron-sulfur centers

3. flavin mononucleotide

4. ubiquinones, protein carriers of high molecular weight that are mobile in the phospholipid bilayer of the membrane.

A) 1,3 B) 2,3,4 C) 1,2,3 D) 1,4 E) All of the above

52) Within the inner mitochondrial membrane, the carriers of the electron transport chain cluster into three complexes (My answer A)

A) Q transfers electrons between the second and third complexes B) cytochrome C transfers electrons between the first and second complexes C) one of the complexes contain six copper atoms. D) A, B, and C E) None of the above

57) Of the 36 or 38 ATPs produced during aerobic respiration of one glucose molecules (my answer E)

A) 2 result from the oxidation of glucose to pyruvic acid B) 6 result from the formation of acetyl-CoA C) 24 result from the Krebs cycle D) A and B E) All of the above

63) When the body needs energy

A) Glycogen stored in the pancreas is broken down into glucose and release into the bloodstream to be transported to cells, where it will be catabolized B) glycogenolysis occurs C) glycogen is broken down into glucose D) B and C E) All of the above

Answer 1

38) Each time pyruvic acid enters the Krebs cycle

A) 3 molecules of carbon dioxide is liberated

B)the molecule of carbon dioxide leave the mitochondria and diffuse through the cytosol to the plasma

the both are correct.

39) Electron carriers in the electron transport chain .

1. cytochromes b,c,a

2. iron-sulfur centers

3. flavin mononucleotide

4. ubiquinones, protein carriers of high molecular weight that are mobile in the phospholipid bilayer of the membrane.

All the above are correct options