Multiple Choice
Proinsulin:
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12. Biosignaling
Insulin
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What is the effect of insulin on lipid fatty acid synthesis?
A
It activates regulatory proteins that inhibit synthesis of fatty acids.
B
It increases the synthesis of fatty acids resulting in higher amounts of fat storage.
C
In causes fatty acids degradation by liposomes.
D
It decreases fat storage by converting fatty acids to energy.
E
None of the above.
Verified step by step guidance1
Understand the role of insulin in metabolism: Insulin is a hormone that plays a key role in regulating glucose levels in the blood and has significant effects on lipid metabolism.
Explore insulin's effect on lipid synthesis: Insulin promotes the synthesis of fatty acids and triglycerides, leading to increased fat storage in adipose tissue.
Consider the biochemical pathway: Insulin activates acetyl-CoA carboxylase, an enzyme that catalyzes the conversion of acetyl-CoA to malonyl-CoA, a crucial step in fatty acid synthesis.
Analyze the regulatory proteins: Insulin influences the activity of regulatory proteins such as sterol regulatory element-binding proteins (SREBPs), which enhance the transcription of genes involved in lipid synthesis.
Evaluate the overall impact: Insulin's activation of these pathways results in increased fatty acid synthesis and storage, rather than degradation or conversion to energy.
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