Steroid hormones and thyroid hormones do not require a membrane receptor because they
a. are small enough to pass directly through the membrane.
b. are soluble in the lipid bilayer.
c. pass through special membrane channels.
d. are water-soluble.
e. dissolve in the cholesterol of the membranes.
B
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Phenotypes:
A. can be subject to environmental conditions. B. only result from gene transcription. C. are invariant. D. result solely from the actions of a single gene. E. None of the answer options is correct.
The majority of bony fishes show the ____ reproductive strategy
a. viviparous b. oviparous c. internal fertilization d. ovoviviparous
Which person could exert the most influence to speed the reduction of greenhouse gas emissions?
A) individual B) business owner C) nonprofit corporation D) policymaker
Which situation most likely describes a recessive genetic disorder?
A) The mutant allele of the gene encodes a completely nonfunctional protein. B) The mutant allele of the gene encodes a protein that has both the normal function and a new, harmful function. C) The mutant allele of the gene encodes a protein that has a new, harmful function. D) The mutant allele of the gene encodes a protein with the normal function but twice the normal activity.