Asked in PMC Practice Test 18 (2021) 2021

Cells release various cellular secretions to facilitate bodily functions. Most of the cellular secretions are:

Correct answer: A. Glycoproteins

  • A. Glycoproteins
  • B. Glycolipids
  • C. Nucleohistones
  • D. Carbohydrates

Explanation

Any protein molecule with a carbohydrate attached is known as a glycoprotein. The primary site of glycoprotein and glycolipid synthesis is the Golgi apparatus. Nearly all cellular processes involve glycoproteins. They play various roles in our body, including those related to our immune systems, physical protection, cell-to-cell communication, and reproductive systems. Hence, A is the correct option.

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About Conjugated Molecules

Conjugated molecules contain a non-protein component attached to a protein portion, giving the molecule properties that a simple protein lacks. The content includes glycoproteins, lipoproteins, phosphoproteins, nucleoproteins, chromoproteins and metalloproteins, with attention to their prosthetic groups and roles in transport, protection, catalysis and cellular structure.

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