Moderate

The chemical nature of an antibody is:

Correct answer: A. Glycoprotein

  • A. Glycoprotein
  • B. Glycolipids
  • C. Lipoproteins
  • D. Polysaccharides

Explanation

Option A is correct as antibodies can be described as glycoproteins, compounds that consist of carbohydrates and proteins.

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About Circulation

The circulatory system covers the chambers, valves and conducting pathway of the human heart, along with the cardiac cycle and control of heartbeat. It compares arteries, veins and capillaries by structure and function, and explains how the lymphatic system returns tissue fluid, transports absorbed fats and supports immunity.

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