Answer:
From the point of view of the type of molecule that is obtained after the degradation of the hydrocarbon skeleton, amino acids can be classified as: glucogenic and ketogenic. The main difference between glucogenic amino acids and ketogenic amino acids is that glucogenic amino acids can be converted to pyruvate or other glucose precursors, while ketogenic amino acids can be converted to acetyl CoA and acetoacetylCoA.
Explanation:
Glucogenic amino acids are amino acids that break down to pyruvate, alpha-ketoglutarate, succinyl Co-A, fumarate, and oxaloacetate and are so named because the synthesis of glucose from these molecules is feasible. Both pyruvate and the Krebs cycle intermediates noted above can be converted to phosphoenolpyruvate and subsequently glucose through gluconeogenesis.Ketogenic amino acids are the amino acids that generate acetyl-CoA or acetacetyl-CoA and are called by this name because they can cause ketone bodies. Since mammals lack the proper enzyme system, these compounds can never be used as precursors for glucose biosynthesis. Of the twenty universal amino acids, fourteen are purely glucogenic and two are purely ketogenic (leucine and lysine). The remaining four (isoleucine, phenylalanine, tryptophan and tyrosine) are glucogenic and ketogenic simultaneously since a part of the hydrocarbon skeleton originates precursors for the biosynthesis of glucose (pyruvate or Krebs cycle intermediates) and the other part acetyl-CoA or acetacetyl -CoA.
III is the correct answer
Answer: To
compensate for low concentrations of carbohydrates, the body hydrolyzes TAGs to
free fatty acids and glycerol, the latter of which is provided in ample supply
to feed the -citric acid cycle.
<span>When the body is
under starvation condition, low concentration of carbohydrates occurs, then the
body hydrolyzes triacylglycerols to fatty
acids and ketone bodies. Moreover, the acetyl CoA cannot be transformed into pyruvate so fatty
acids cannot be converted into glucose. The other potential source of glucose
is amino acids but this process is inherently inefficient and weakens
the body so protein must be preserve.</span>
Answer: nah jit got me fudup, this way to long
Explanation:
