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Oxidative deamination takes place in the

A.

brain

B.

blood

C.

liver

D.

muscles

Answer and Explanation

The Correct Answer is C

A. Brain: While amino acids are important in brain metabolism, oxidative deamination primarily occurs in the liver.
B. Blood: The blood transports nitrogenous waste, but deamination doesn’t occur here.
C. Liver: The liver is the major site of oxidative deamination, where amino acids are stripped of their amino groups, forming ammonia, which is then converted to urea.
D. Muscles: Muscles may perform transamination, but oxidative deamination is mainly hepatic.


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Related Questions

Correct Answer is {"dropdown-group-1":"B"}

Explanation

A. External urethral orifice: This is the external opening of the urethra, and part of the urethral passageway.
B. Internal urethral sphincter: This is a muscular structure that regulates flow, but it is not a section of the urethral tube itself.
C. Prostatic urethra: This is the part of the male urethra that passes through the prostate gland.
D. Membranous urethra: This portion passes through the urogenital diaphragm in males.
E. Spongy urethra: The longest segment of the male urethra, it runs through the penile (spongy) tissue.

Correct Answer is A

Explanation

A. Gastrin: G cells secrete gastrin, a hormone that stimulates parietal cells to produce hydrochloric acid and promotes gastric motility. It is released in response to food components like peptides, caffeine, and a rise in pH.
B. Pepsin: Pepsin is an enzyme that digests proteins, but it is secreted as pepsinogen by chief cells, not G cells.
C. Ghrelin: Ghrelin is a hunger-stimulating hormone, secreted primarily by cells in the stomach fundus, not by G cells.
D. Hydrochloric acid: Hydrochloric acid is secreted by parietal cells, not G cells.

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