Asked in Premeth Test 6 — Biological Molecules, Genetics, Transport and Digestion (8 March 2025) 2025Moderate

The lipoproteins are rich in cholesterol _

Correct answer: C. LDL

  • A. Chylomicrons
  • B. VLDL
  • C. LDL
  • D. HDL

Explanation

LDL, or low-density lipoprotein, is often referred to as 'bad' cholesterol because it transports cholesterol to the arteries, where it can accumulate and form plaques. This increases the risk of cardiovascular diseases such as heart attack and stroke. In contrast, HDL, or high-density lipoprotein, is termed 'good' cholesterol because it helps transport cholesterol away from the arteries and back to the liver, where it can be processed and removed from the body. Chylomicrons mainly transport lipids from the diet, and VLDL primarily carries triglycerides, not cholesterol.

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About Lipids

Lipids include fats, oils, waxes, phospholipids and steroids, which are largely insoluble in water and soluble in organic solvents. Coverage includes glycerol and fatty acids, ester bond formation, saturated and unsaturated fats, triglyceride functions, and phospholipids in cell membranes.

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