Two populations that inhabit the same area but remain genetically distinct can best be called
A. species.
B. subspecies (races).
C. polymorphic.
D. allopatric species.
E. sympatric species.
A. species.
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The function of a kinase is
A) methylation. B) response regulation. C) phosphorylation. D) glycosylation.
Which hormone is responsible for increasing blood calcium levels?
a. insulin b. glucagon c. parathyroid hormone d. calcitonin
If the age-specific fertility rate is such that 100 females of age class x would produce 50 offspring, what is the contribution of age class x to the overall population growth rate?
A. 50 B. 2 C. 0.5 D. 0.75 E. cannot be calculated with this information.
Which of the following pairs is mismatched?
A) ionizing radiation — hydroxyl radicals B) ozone — takes electrons from substances C) plasma sterilization — free radicals D) supercritical fluids — CO2 E) ultraviolet radiation — desiccation