Practice Questions

Saturated fatty acids characteristically contain

A. One or more double bonds
B. No carbon-carbon double bonds
C. Triple bonds
D. Phosphate groups
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Jun 27, 2026

The phosphate-containing lipid among the following is

A. Wax
B. Phospholipid
C. Triglyceride
D. Neutral fat
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One molecule of glycerol can combine with a maximum of

A. One fatty acid
B. Two fatty acids
C. Three fatty acids
D. Four fatty acids
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Biological membranes remain flexible because phospholipids possess

A. Polar heads and nonpolar tails
B. Three phosphate groups
C. Peptide chains
D. Cellulose fibers
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Triglycerides primarily function as

A. Enzymes
B. Energy reserves
C. Genetic material
D. Hormones
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The ester linkage in lipids is formed between

A. Amino and carboxyl groups
B. Hydroxyl and carboxyl groups
C. Phosphate and amino groups
D. Sulfur and oxygen
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Jun 27, 2026

Acylglycerols are produced through the reaction between

A. Amino acids and fatty acids
B. Glycerol and fatty acids
C. Glucose and fatty acids
D. Ribose and proteins
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The hydrophilic portion of a phospholipid faces

A. Interior of membrane
B. Aqueous environment
C. Fatty acid tails
D. Protein core only
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A diglyceride differs from a triglyceride because it contains

A. One fatty acid
B. Two fatty acids
C. Three phosphate groups
D. No glycerol
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Energy stored in triglycerides exceeds carbohydrates because triglycerides contain

A. Less hydrogen
B. More hydrogen and less oxygen
C. More nitrogen
D. More sulfur
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