How many fatty acid molecules are normally present in a fat or oil molecule?
Correct answer: C. 3
- A. 1
- B. 2
- C. 3
- D. 4
Explanation
The correct answer is 3. A typical fat or oil molecule is known as a triglyceride, which is composed of a glycerol backbone attached to three fatty acid molecules. Option A (1) and Option B (2) are incorrect because they do not reflect the structure of triglycerides. Option D (4) is incorrect as it exceeds the standard three fatty acids found in triglycerides.
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The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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