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Question

Which of the following act as local hormone ?

A
Carrier protein
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B
Glycoprotein
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C
Phospholipid
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D
Nitric oxide
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Solution

The correct option is D Nitric oxide
Local hormones is a large group of signaling molecules that do not circulate within the blood.

Nitric Oxide Nitric oxide (NO) is a local hormone released by endothelial cells that line some blood vessels. Nitric oxide produces relaxation of smooth muscle fibers in the blood vessels, which results in vasodilation that can lower blood pressure. It also dilates blood vessels in the penis for blood engorgement and erection during sexual arousal.

Phospholipids provide barriers in cellular membranes to protect the cell, and they make barriers for the organelles within those cells.

Glycoproteins are proteins which contain oligosaccharide chains covalently attached to amino acid side-chains.

Carrier protein is a type of cell membrane protein involved in facilitated diffusion and active transport of substances out of or into the cell.

Hence, the correct answer is Nitric oxide

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