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
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At constant temperature, if a dog increases the volume of her lung and thereby the volume of gas contained within, predict what will happen to the pressure of the gas.
A. The pressure will decrease. B. The pressure will increase. C. The pressure will not change.
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
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.
The normal microbiota is part of the _______ line of defense.
A. first B. second C. third D. fourth