If you heard of a newly discovered class of steroid hormones, which property would be most surprising?
A. They are lipid-soluble.
B. They alter gene expression.
C. They bind to a receptor inside the cell's cytoplasm or nucleus.
D. They bind to a receptor on the surface of the cell.
E. They are chemically closest to testosterone.
D. They bind to a receptor on the surface of the cell.
You might also like to view...
The reason why dwarf pea plants are shorter is because
a. an enzyme involved in gibberellin hormone synthesis is missing. b. the plants completely stop growing shortly after sprouting. c. they cannot make any gibberellin hormone. d. they produce very little gibberellin hormone. e. they produce an excess of gibberellin hormone.
Which is a benefit of living in a group? a. Cooperative response to an attack
b. Ability to mount a more formidable defense. c. More eyes to watch for predators. d. All of these choices. e. More individuals who can help counterattack a rival group.
X-ray diffraction studies are used to determine:a
the sequence of amino acids in protein molecules. b. the sequence of nucleic acids in nucleic acid molecules. c. the distances between atoms of molecules. d. the type of chemical under investigation. e. the wavelength of light emitted by chemicals
The major types of ecosystems are termed
A. habitats. B. niches. C. biospheres. D. terrestrial zones. E. biomes.