Biochemistry: 1.) Which of the following factors can affect the concentration of

Question

Biochemistry: 1.) Which of the following factors can affect the concentration of glucose in the blood? Please select all correct answers.

a. ability to release insulin

b. ability to respond to insulin (insulin sensitivity)

c. ability to release and respond to glucagon

d. the availability of glycogen in the liver

e. the availability of gluconeogenic (also called glucogenic) substrates to fuel gluconeogenesis and glucose export in the liver

f. the ability of the liver to produce ketone bodies when necessary

2.) When a person has fasted for 12 hours, blood glucose is still being used by the brain and other tissues. How is that glucose being replenished? Please select all correct answers.

a. muscles run gluconeogenesis and export glucose into the blood

b. muscles run glycogenolysis and export glucose into the blood.

c. large amounts of dietary glucose are still being absorbed from the digestive tract

d. the liver runs gluconeogenesis and exports glucose into the blood

e. the liver runs glycogenolysis and exports glucose into the blood

f. the brain makes its own glucose from large amounts of glycogen stored in the brain

g. adipocytes break down TAGs to fatty acids and then convert those fatty acids to glucose which is then exported by the adipocyte

Thank you!

Explanation / Answer

Ans 1:- (a)(b)(c)(d)(e)

explaination for (a) when the beta cells of pancreas are able to secrete the insulin into the blood it reduces the level of blood glucose by making the cells more permeable to glucose after making of glucose transporter on the cell membrane.

explaination for (b) same explaination as for (a)

explaination for (c) glycogon id the enzyme that breaks the stored glycogen to glucose hence level of glucose level in inturn increased in the blood.

explaination for (d) availability of glycogen means glucsoe level can be increased by glycogon.

expalination for (e) increaes glucose level.

Ans (2) (d) (e) both of these are associated with the formation of glucose which enters blood circulation and hence to brain.

muscles doesnot contain glucose 6 phosphatase and it cannot deliver glucose to blood..

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