Natural selection operates to produce changes in
a. individuals.
b. populations.
c. races.
d. phyla.
e. animals only.
B
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The upstream activator sequences (UASs) of yeast are analogous to ______________ in higher eukaryotes
A. promoters B. TATA boxes C. operators D. enhancers
With cladistic analyses, characters of an organism exist in ____ form(s), referred to as ____
a. one; a character state b. two; character states c. two; variable traits d. many; polymorphic states e. many; variable traits
It has been thought that many diseases now associated with aging are related to malfunctioning
mitochondria. Why are the mitochondria so important to all cells?
a. They produce energy in the form of ATP. b. They generate heat to keep the body warm. c. They are the source of all human disease. d. They are extremely large. e. They are located only in vital organs.
The process often referred to as "cellular eating" is
A. phagocytosis. B. diffusion. C. pinocytosis. D. active transport. E. osmosis.