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Metabolic Process NADH formed FADH 2 formed CO 2 formed ATP formed by substrate

ID: 266929 • Letter: M

Question

Metabolic Process

NADH formed

FADH2 formed

CO2 formed

ATP formed by substrate level ~P

ATP formed by oxidative ~P

beta-oxidation

2

0

3

Kreb’s cycle

6

3

Food labels list that a gram of fat has 9 kcal of energy and that a gram of carbohydrate (or protein) has 4 kcal of energy. A mass to mass comparison, however, is misleading. A better comparison is mol to mol, which corrects for differences in MW. This can be done by comparing a molecule of glucose, which has 6 carbons, to a molecule of a fatty acid that also has 6 carbons.Complete the missing entries in the following table for the complete oxidation of one molecule of caproic acid in skeletal muscle. Caproic acid is a 6-carbon saturated, medium chain fatty acid found naturally in various animal fats and oils. (Caproic acid undergoes two cycles of ?-oxidation to form three acetyl-CoAs).

Metabolic Process

NADH formed

FADH2 formed

CO2 formed

ATP formed by substrate level ~P

ATP formed by oxidative ~P

beta-oxidation

2

0

3

Kreb’s cycle

6

3

Explanation / Answer

One molecule of caproic acid undergoes the complete oxidation to form the following

                               beta-oxidation               Kreb’s cycle

NADH formed                                           2                                     9

FADH2formed                                             2                                    3                

CO2formed                                                 0                                    6

ATP formed by substrate level~P               0                                    3

ATP formed by oxidative ~P                      3                                     0