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Q20. Increased levels of plasma glucagon _______________.a) Stimulates facilitated diffusion of glucose into tissuesb) Increases protein synthesisc) Enhances glycogen formationd) Stimulates gluconeogenesis

Question

Q20. Increased levels of plasma glucagon _______________.a) Stimulates facilitated diffusion of glucose into tissuesb) Increases protein synthesisc) Enhances glycogen formationd) Stimulates gluconeogenesis

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Solution

The answer is d) Stimulates gluconeogenesis.

Here's why:

Glucagon is a hormone produced by the pancreas that works with insulin to control blood sugar levels. It acts to keep blood glucose levels high enough for the body to function properly.

a) Glucagon does not stimulate facilitated diffusion of glucose into tissues. This is primarily the role of insulin, which helps cells in the body absorb glucose and use it for energy.

b) Glucagon does not increase protein synthesis. While it's true that glucagon can influence protein metabolism, its primary role is not to increase protein synthesis but to maintain blood glucose levels.

c) Glucagon does not enhance glycogen formation. In fact, it does the opposite. Glucagon stimulates the breakdown of glycogen into glucose in the liver, a process called glycogenolysis, to increase blood glucose levels.

d) Glucagon stimulates gluconeogenesis. This is the process by which the body produces glucose from non-carbohydrate sources, such as amino acids and glycerol. This happens primarily in the liver and is stimulated by glucagon, especially during periods of fasting, low-carbohydrate diets, or intense exercise.

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