Question

In: Biology

Which of the following molecule is able to carry and transfer the “ –CH=O”(a type of...

  1. Which of the following molecule is able to carry and transfer the “ –CH=O”(a type of one carbon unit) ?

A. Biotin                     B. Tetrahydrofolate                C. ATP D. arachidonic acid

  1. The major organs of gluconeogenesis are the liver and the___.

A. Kidney                   B. adipose tissue         C. Bone

  1. Which of the following ketone bodies is not a usable energetic substrate for the body?

A. Acetoacetate                      B. Acetone      C. β-hydroxybutyrate

  1. Urea cycle involves transaminations occurring in mitochondrion and cytosol.

A. True                        B. False

Solutions

Expert Solution

Which of the following molecule is able to carry and transfer the “ –CH=O”(a type of one carbon unit)

Correct answer is option B. Tetrahydrofolate

Explanation :

THF can transfer single unit carbon such as formate group, methyl group, etc. during anabolic reactions. Anabolic reactions are those in which new higher grade or complex compounds are formed from simpler molecules.

The major organs of gluconeogenesis are the liver and the___.

A. Kidney

Explanation :

Gluconeogenesis occurs in liver and kidneys. Gluconeogenesis is a process in which the glucose sugar is formed from non-carbohydrate precursors.  

Which of the following ketone bodies is not a usable energetic substrate for the body?
B. Acetone

Explanation :
In the body, acetone is a ketone produced from digestion of fats. This is secreted in the form of wastes and increase in concentration results in ketosis.

Urea cycle involves transaminations occurring in mitochondrion and cytosol.

A. False

Explanation :

Transamination occurs only in mitochondria when the ammonium ion is transferred to alpha ketogluatarate. Transamination is a chemical process in which amino groups are transferred from the acceptor keto acids to the amino acids. This generates an amino-acid version of keto acid and keto acid version of amino-acids.

gladiator answered 2 years ago
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