1) Glucose cannot be synthesized from the -oxidation of even chain fatty acids b
ID: 913400 • Letter: 1
Question
1) Glucose cannot be synthesized from the -oxidation of even chain fatty acids because:
a) gluconeogenesis is inhibitid by acetyl CoA produced in the -oxidation of fatty acids
b) the acetyl CoA produced from -oxidationis completely oxidized in the TCA cycle
c) Insulin levels are elevated when fatty acids are being oxidized
d) Acetyl CoA produced in the -oxidation of fatty acids cannot be transported out of the mitochondrial matrix
2) after a 24 hour fast, which of the following is the major metabolic pathway providing glucose for the brain?
a) the pentose phosphate pathway
b) gluconeogenesis
c) glycogenolysis
d) ketone body synthesis
Explanation / Answer
ANSWER;
(1) OPTION (B) is correct answer. Pyruvicacetyl-CoA is produced from ODD CHAIN FATTY ACID, which enters the process of synthesis of glucose. However EVEN CHAIN FATTY ACIDS does not produce Pyruvicacetyl-CoA, these produce only actyl-CoA
(2) Ketone body synthesis i.e; option (d) is correct answer. ketone -bodies are capable of crossing the bllod-brain barrier.
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