Which Statement About Insulin Is Not True

question 62

Multiple Choice

Which statement about insulin is not true?

• A) It is synthesized as a precursor.
• B) It probably exists in a tightly folded conformation at physiological concentrations in plasma.
• C) It is composed of two peptide chains linked by disulfide bonds. When separated, these two chains will readily recombine to form active insulin in high yield.
• D) It promotes glucose and amino acid uptake by muscle.
• E) It is stored in the secretory granules of the beta cell of pancreatic islets as Zn-insulin along with an equimolar amount of C-peptide.

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Definitions:

Largest Artery

The largest artery in the human body is the aorta, which carries oxygenated blood from the heart to the rest of the body.

Aorta

The largest artery in the body, originating from the left ventricle of the heart and extending down to the abdomen, distributing oxygenated blood to all parts of the body.

Right Ventricle

The lower right chamber of the heart that receives deoxygenated blood from the right atrium and pumps it to the lungs for oxygenation.

Metarterioles

Small blood vessels that function as intermediaries between arterioles and capillaries, controlling blood flow into capillary beds with precapillary sphincters.