The rate of enzyme activity decreases by half when the body temperature drops by
a. 5? F.
b. 8? F.
c. 2? F.
d. 6? F.
e. 10? F.
E
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True or false: The energy to carry out the movement of a ribosome comes from GTP
A. true B. false
An adenovirus
a. is a naked virus. b. does not have a lipid envelope. c. has a spiked protein coat. d. infects animals. e. all of these.
How do prions differ from viruses?
a) Unlike viruses, prions are infectious proteins. b) Unlike viruses, prions do not include any nucleic acids. c) Unlike a virus, a prion is a single molecule. d) all of the above
The two-factor crosses performed by Mendel support the observation that
A. alleles for a given trait are distributed randomly among an individual's gametes independent of the alleles for other traits. B. the F1 generation can display phenotypes in combinations different from those seen in the P generation. C. traits that are encoded by genes on different chromosomes are never found within the same gamete. D. self-fertilization of the F1 generation will produce 100% heterozygous plants at both loci. E. the F2 generation will only display phenotypes in the same combinations as the P generation.