In order to be used as an energy source, amino acids have to ...

[chads108]

In order to be used as an energy source, amino acids have to undergo
 
  a. beta-oxidation.
  b. deamination.
  c. glycogenesis.
  d. ketogenesis.

Question 2

Before they enter the tricarboxylic acid (TCA) cycle, fatty acids are broken down to
 
  a. keto acids.
  b. pyruvic acid.
  c. ketone bodies.
  d. acetyl coenzyme A.

[meltdown117]

Answer to Question 1

B
Amino acids undergo deamination, removal of the amino group, before they can be metabolized to release energy. Beta-oxidation is part of the process of metabolism of fatty acids. Glycogene-sis is the process by which glycogen is formed from glucose. Ketogenesis is the formation of ke-tone bodies when fat is used for energy and there is insufficient oxygen for aerobic glycolysis.

Answer to Question 2

D
Fatty acids are broken down to acetyl coenzyme A before they enter the TCA cycle. Keto acids are formed as protein is metabolized to release energy. Pyruvic acid is a substance that is formed as nutrients are converted to acetyl coenzyme A. Ketone bodies are formed when fat is metabo-lized to release energy and there is insufficient oxygen for aerobic glycolysis.

[chads108]

Excellent

[amit]

TYSM