Multiple Choice
Polysaccharides are the macromolecules that act as a source of energy storage.
2. Chemical Components of Cells
Four Classes of Macromolecules
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In terms of molecular structure, how is a phospholipid different from a triglyceride?
A
A phospholipid has two fatty acid tails and a phosphate-containing head group, whereas a triglyceride has three fatty acid tails esterified to glycerol.
B
A phospholipid has three fatty acid tails and no phosphate group, whereas a triglyceride has two fatty acid tails and a phosphate head group.
C
A phospholipid is primarily composed of monosaccharides, whereas a triglyceride is primarily composed of disaccharides.
D
A phospholipid is a polymer of amino acids, whereas a triglyceride is a polymer of nucleotides.
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