The Fatty Acids Released by the Lipolysis of Triglycerides Cannot

question 41

Multiple Choice

The fatty acids released by the lipolysis of triglycerides cannot be used for glucose production because

• A) they cannot pass through electron transport chain
• B) acetyl coenzyme A cannot be readily converted to pyruvic acid
• C) lipase enzymes cannot breakdown fatty acids into pyruvate
• D) they are present within vacuoles that are inaccessible to enzymes
• E) they are unable to accept a hydroxide group to form glucose

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Definitions:

(R)-glyceraldehyde

A carbohydrate that is the R-enantiomer of glyceraldehyde, serving as a simple monosaccharide and a basic building block for more complex sugars.

(-)-glyceraldehyde

A specific stereoisomer of glyceraldehyde, a simple sugar molecule that serves as an intermediate in several metabolic pathways.

(+)-glyceraldehyde

An enantiomer of glyceraldehyde, denoted as having a positive optical rotation; it is a simple sugar and plays a role in several metabolic pathways.

E.e.

Enantiomeric excess, a measure of the purity of an enantiomer in a mixture, indicating the percentage difference between two enantiomers' concentrations.