Which of the following is NOT characteristic of endocrine signaling?
a. long-term regulation
b. quick, rapid responses
c. controlled by both positive and negative feedback
d. regulates body growth
e. regulates metabolism
ANSWER: b
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Hydrophobic hormones act by ____
a. triggering a genomic response b. triggering a signal transduction pathway c. activating an effector molecule d. inhibiting feedback loops e. preventing translation
The nuclear pore complex of proteins is estimated to have a mass
a. smaller than that of a ribosome. b. about the same as that of a ribosome. c. about five times that of a ribosome. d. about 30 times that of a ribosome.
________ genes are those that have been inherited by different species from a common ancestor
a. Housekeeping b. Xenologous c. Paralogous d. Homologous