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How does glucagon increase blood glucose levels?Group of answer choicesBy activating pyruvate kinaseBy activating glycogen phosphorylaseBy activating glycogen synthaseBy activating PFK-1

Question

How does glucagon increase blood glucose levels?Group of answer choicesBy activating pyruvate kinaseBy activating glycogen phosphorylaseBy activating glycogen synthaseBy activating PFK-1

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Solution

Glucagon increases blood glucose levels by activating glycogen phosphorylase.

Here's a step-by-step explanation:

  1. Glucagon is a hormone that is produced by the pancreas. It is released when the levels of glucose in the blood are low.

  2. The main role of glucagon is to prevent blood glucose levels from dropping too low. It does this by stimulating processes that increase the concentration of glucose in the blood.

  3. One of the key processes that glucagon stimulates is the breakdown of glycogen, a stored form of glucose, into glucose that can be released into the bloodstream.

  4. The enzyme that catalyzes this breakdown of glycogen is called glycogen phosphorylase.

  5. When glucagon binds to its receptor on the liver cells, it triggers a series of reactions that result in the activation of glycogen phosphorylase.

  6. Once activated, glycogen phosphorylase breaks down glycogen into glucose-1-phosphate, which is then converted into glucose-6-phosphate and finally into glucose that can be released into the bloodstream.

So, the correct answer is "By activating glycogen phosphorylase".

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Similar Questions

Glucagon causesGroup of answer choicesAn increase in glucose utilisation and storagean increase in fatty acid synthesis and lipid storageAn increase in glycogen synthesisAn increase in blood glucose concentration

Another hormone involved in the control of plasma glucose concentration is glucagon. Explain how glucagon increases blood glucose concentration.

Select all that applyWhat are some effects of glucagon?Multiple select question.lowers blood glucose levelsstimulates the conversion of noncarbohydrates (e.g., amino acids) into glucoseraises blood glucose levelsstimulates the liver to break down glycogenstimulates the liver to store glucose as glycogen

What is glucagon? The hormone that stimulates the conversion of glucose to glycogenThe sugar used in respirationThe hormone that stimulates the breakdown of glycogen to glucoseThe storage carbohydrate found in liver and muscles

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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