What stimulates the production of adrenocorticotropic hormone (ACTH)?
A. GHRH
B. CRH
C. CIH
D. ADH
B. CRH
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Males are often more colorful, larger, and aggressive than females. What is the term for these types of differences between the sexes?
a. male traits b. sexual traits c. sexual dimorphism d. male dominance e. hormonal variance
Which of the following matches of plant hormone to
agricultural application is INCORRECT? a. abscisic acid; induces dormancy in nursery stock before shipment b. ethylene; permits unripe fruit to be shipped without damage for later ripening at distribution centers c. synthetic auxins; induce production of seedless fruit d. cytokinins; promote root formation in cuttings e. gibberellins; increase fruit size
Which of the following statements is false?
a. The tissues of arthropods are bathed with hemolymph, which delivers oxygen to their cells. b. In an open circulatory system the heart is still responsible for pumping oxygen-rich fluid. c. Earthworms have a central heart that pumps blood to all their tissues. d. Blood vessels are found in the open circulatory systems common to some invertebrates. e. Hemocyanin is the oxygen transport pigment found in the open circulatory system of invertebrates.
In prokaryotes, control of gene expression is mainly at the level of ____.
A. transcription B. transcript processing C. transport D. translation E. post-translation