An endocrine gland is
A. required for remodeling bone.
B. restricted to the production of growth factors.
C. where neuronal signals are generated.
D. the site at which hormones are produced and released into the blood.
Answer: D
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Refer to the study by Poulsen et al. and the figure above. Cultures of a species of diatom were treated with BDM, a reversible inhibitor of myosin function
Which of the following predictions is consistent with the hypothesis that an actin-myosin interaction is necessary for motility? A) BDM will significantly decrease motility of the cells in culture. B) BDM will not significantly alter motility of the cells in culture. C) BDM will significantly increase motility of the cells in culture.
Among the actions listed below, which are involved in PCR, and in what order? Extension Initiation Denaturation Termination Annealing
A. Initiation, extension, termination B. Denaturation, annealing, extension C. Denaturation, extension, termination D. Initiation, denaturation, extension E. Annealing, initiation, termination
In what way would life be different if the element carbon was absent?
A. Life would not exist in any shape or form. B. There would be no organic compounds. C. There would be no inorganic compounds. D. The concept of pH would not exist.
Species whose ranges overlap, but do not interbreed because they are found in different environments or areas within
the range, are said to exhibit:a. habitat isolation. b. temporal isolation. c. biological isolation. d. evolutionary isolation. e. environmental isolation.