Which of the following characteristics is not associated with cardiac muscle?
A) intercalated discs
B) electrical coupling by gap junctions
C) involuntary nervous control
D) fusion of cardiomyocytes into large multinucleated myofibers
E) striations
Answer: D
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A prolonged period without rain is causing a major drought in the American Midwestern states. How would you expect crops to respond initially to the stress caused by the drought?
A. They will take in more carbon dioxide. B. They will take in less carbon dioxide. C. They will release more oxygen. D. They will increase rates of photosynthesis. E. They produce fewer secondary metabolites.
Define conservation biology and distinguish it from the science of ecology
What will be an ideal response?
The seasonal cessation of activities accompanied by a reduction in metabolism in response to cold temperatures during winter is called
A) hibernation. B) torpor. C) heterothermy. D) diapause.
An antibody_____ provides a measure of the quantity of antibodies in the serum.
Fill in the blank(s) with the appropriate word(s).