Which one of the following statements regarding glucagon is TRUE?Question 20Select one:a.Glucagon generally works in opposition to insulin in order to decrease blood glucose levelsb.Glucagon generally works in opposition to insulin so only one hormone (glucagon or insulin) is present in the bloodstream at any one time.c.Glucagon receptors are activated by epinephrine to trigger a cell signalling cascade and stimulate fatty acid release from storaged.Glucagon and insulin are both stimulated by increased amino acids in the bloodstream.e.Both a and d are TRUE.
Question
Which one of the following statements regarding glucagon is TRUE?Question 20Select one:a.Glucagon generally works in opposition to insulin in order to decrease blood glucose levelsb.Glucagon generally works in opposition to insulin so only one hormone (glucagon or insulin) is present in the bloodstream at any one time.c.Glucagon receptors are activated by epinephrine to trigger a cell signalling cascade and stimulate fatty acid release from storaged.Glucagon and insulin are both stimulated by increased amino acids in the bloodstream.e.Both a and d are TRUE.
Solution
The correct answer is c. Glucagon receptors are activated by epinephrine to trigger a cell signalling cascade and stimulate fatty acid release from storage.
Here's why:
a. Glucagon generally works in opposition to insulin, but its main function is to increase blood glucose levels, not decrease.
b. Glucagon and insulin can both be present in the bloodstream at the same time, they do not exclude each other.
c. This is true. Glucagon receptors can be activated by epinephrine (also known as adrenaline), which triggers a cell signalling cascade that leads to the release of fatty acids from storage.
d. While it's true that both glucagon and insulin can be affected by amino acid levels, they respond in different ways. Insulin is stimulated by increased amino acids to help cells absorb them, while glucagon is stimulated by decreased amino acid levels to help release them from storage.
e. As explained above, both a and d are not completely true.
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