Which one of the following biological polymers is defined by a physical property rather than a chemical structure?

A. proteins
B. lipids
C. monosaccharides
D. nucleic acids
E. polysaccharides


Answer: B

Biology & Microbiology

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A. The pressure will decrease. B. The pressure will increase. C. The pressure will not change.

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A person with an autosomal recessive disorder generally has how many copies of the dominant allele?

a) Two, on the X chromosome b) Two c) Zero d) Two, on the Y chromosome e) One

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The amount of energy needed to start two reactants to form a product is 

A. reaction energy. B. kinetic energy. C. activation energy. D. potential energy.

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The normal microbiota is part of the _______ line of defense.

A. first B. second C. third D. fourth

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