Defining characteristics of chordates are
What will be an ideal response?
gill arches or pharyngeal pouches, dorsal tubular nerve cord, notochord, and postanal tail.
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Which strategy can be used for regulation of metabolism?
A. Feedback inhibition B. Regulation of enzyme synthesis C. Covalent modification of enzymes D. Allosteric regulation E. All of the choices are correct.
Vinblastine is a standard chemotherapeutic drug used to treat cancer. Because it interferes with the assembly of microtubules, its effectiveness must be related to _____
A) disruption of mitotic spindle formation B) inhibition of regulatory protein phosphorylation C) suppression of cyclin production D) myosin denaturation and inhibition of cleavage furrow formation E) inhibition of DNA synthesis
An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population happens to have broader stripes, on average, than the initial population. If broadness of stripes is genetically determined,
what effect has the ground-squirrel population experienced during the earthquake? A) directional selection B) disruptive selection C) a founder event D) a genetic bottleneck E) gene flow
Which of the following is associated with “rest and digest”?
a. The sympathetic nervous system b. The peripheral nervous system c. The parasympathetic nervous system d. The autonomic nervous system