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Fatty Acid Synthesis Steps

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Questions and Answers

What is the result of the condensation reaction in step 3?

A 4-carbon fragment called acetoacetyl-ACP (correct)
A 5-carbon fragment called pentanoic acid
A 3-carbon fragment called acetyl-ACP
A 2-carbon fragment called malonyl-ACP

What is the maximum length of fatty acid chains that can be obtained through this sequence of reactions?

C14 (myristic acid)
C12 (lauric acid)
C18 (stearic acid)
C16 (palmitic acid) (correct)

What is the difference between the structure of NADPH and NADH?

A different type of nucleotide base
A different number of phosphate groups
An additional phosphate group on carbon 3’ of one of the ribose units (correct)
An additional phosphate group on carbon 2’ of one of the ribose units

What is the product of the three consecutive reactions in step 4?

A fully saturated C4 fragment (B) Signup and view all the answers

What is the function of the enzyme system mentioned in the last sentence of the passage?

To add one or more C2 fragments to fatty acids (D) Signup and view all the answers

What is the primary source of carbon atoms in fatty acid synthesis?

The acetyl group of acetyl-CoA (A) Signup and view all the answers

What is the function of acetyl-CoA carboxylase in fatty acid synthesis?

To prepare malonyl-CoA from acetyl-CoA and CO2 at the expense of ATP (D) Signup and view all the answers

Which of the following statements about fatty acid synthesis is TRUE?

Fatty acid synthesis involves the addition of C2 fragments to the growing fatty acid chain (C) Signup and view all the answers

What is the role of ACP-SH in fatty acid synthesis?

To carry the growing fatty acid chain and rotate counterclockwise (D) Signup and view all the answers

What are the essential fatty acids that cannot be synthesized by the human body?

Linoleic and linolenic acids (A) Signup and view all the answers