Multiple choice

Which of the following is the odd one?

  1. Thromboxanes

  2. Prostaglandins

  3. Leukotrienes

  4. Cholesterol

  5. Both 2 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cholesterol is an important sterol found in animal tissues. A sterol is the one in which the steroid nucleus (4 fused rings in which 3 rings have 6 carbons and 1 has 5 carbons) contains one or many hydroxyl groups but no carboxyl or carbonyl groups. It is an important component of plasma lipoproteins and plasma membrane. Cholesterol has a polar hydroxyl group on C-3 and also a hydrocarbon side chain on C-17.

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