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How many carboxyl groups are present in fatty acids?

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+1 vote
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in Cell Biology by (121k points)
How many carboxyl groups are present in fatty acids?

(a) 1

(b) 2

(c) 3

(d) 4

I have been asked this question during an online interview.

My doubt is from Chemical Basis of Life topic in division Chemical Basis of Life of Cell Biology

1 Answer

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Best answer
The correct answer is (a) 1

The explanation is: Fatty acids are long chain hydrocarbons containing only one carboxyl group at the end of the molecule. Three fatty acid chains link up via ester bonds to a glycerol molecule to form triacylglycerol. The hydrocarbon chain of fatty acids is hydrophobic and the carboxyl group is hydrophilic.

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