Question

Which of the following is true? Select one: a. More ATP is generated from the metabolism of a glucose molecule than a fatty acid molecule b. More ATP is generated from the metabolism of an amino acid molecule than a fatty acid molecule c. More ATP is generated from the metabolism of a fatty acid than a glucose molecule d. The metabolism of a fatty acid molecule, glucose molecule, or amino acid molecule generates the same amount of ATP. e. The metabolism of a fatty acid molecule and glucose molecule generate the same amount of ATP, but an amino acid molecule generates less ATP

Answer 1

Answer:

The only true statement in the options given is this: MORE ATP IS GENERATED FROM THE METABOLISM OF A FATTY ACID THAN A GLUCOSE MOLECULE.

Explanation:

Glucose is the primary source of fuel for the living cells. Cells break down glucose to obtain energy which they use to carry out their life activities. The other major macro nutrients apart from glucose are fatty acids and proteins. When glucose is not available for cells' use, fatty acid and protein can be converted to glucose through the process of gluconeogenesis.

All though all the three macro molecules can produce energy, fat is the one that produce the highest amount of energy; each gram of fat supplies about 9 calories while glucose supply 4 calories and protein supply less than 4 calories.

Thus, more ATP is generated from the metabolism of fatty acid than a glucose and protein molecules.