OXIDATIVE PHOSPHORYLATION QUIZ

FAD is reduced to FADH2 during

electron transport phosphorylation

Krebs cycle

lactate fermentation

glycolysis

TRUE ANSWER : ?
YOUR ANSWER : ?

How many CO2 molecules are exhaled for each O2 molecule utilized in cellular respiration?

1

6

12

3

TRUE ANSWER : ?
YOUR ANSWER : ?

In electron transport, electrons ultimately pass to

ADP

none of these

oxygen

cytochrome b

TRUE ANSWER : ?
YOUR ANSWER : ?

Lactic acid is produced by human muscles during strenuous exercise because of lack of

oxygen

glucose

ADP and Pi

NAD+

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a significant biological oxidizing agent?

NAD+

Fe3+

FAD

O2

TRUE ANSWER : ?
YOUR ANSWER : ?

Coenzyme Q is involved in electron transport as

a water-soluble electron donor

covalently attached cytochrome cofactor

directly to O2

a lipid-soluble electron carrier

TRUE ANSWER : ?
YOUR ANSWER : ?

In aerobic respiration, the compound that enters a mitochondrion is

phosphoglyceraldehyde

oxaloacetate

pyruvate

acetyl CoA

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a feature of oxidative phosphorylation?

An electrochemical gradient across the inner mitochondrial membrane

A membrane bound ATP synthase

A protonmotive force

Direct transfer of phosphate from a substrate molecule to ADP

TRUE ANSWER : ?
YOUR ANSWER : ?

The carbon dioxide is primary a product of

electron transport phosphorylation.

Krebs cycle

lactate fermentation.

glycolysis

TRUE ANSWER : ?
YOUR ANSWER : ?

During electron transport, protons are pumped out of the mitochondrion at each of the major sites except for

complex II

complex IV

complex I

complex III

TRUE ANSWER : ?
YOUR ANSWER : ?

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