Which of the following evolution-related events is in the correct cause-and-effect sequence?
a. mutation ? variation ? natural selection ? adaptation ? speciation
b. variation ? adaptation ? mutation ? natural selection ? speciation
c. speciation ? adaptation ? variation ? mutation ? natural selection
d. mutation ? speciation ? adaptation ? variation ? natural selection
e. natural selection ? variation ? mutation ? adaptation ? speciation
A
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How many bases are required to form a codon?
a. 5 b. 2 c. 4 d. 1 e. 3
Proteins that act as ____________________ catalyze biochemical reactions and are vital components of the cell’s
metabolic pathways. Fill in the blank(s) with the appropriate word(s).
Which of the following kinds of protozoa are major consumers of Bacteria and other microorganisms in the ocean?
A. Apicomplexa B. Foranimifera C. Dinoflagellates D. Thermophiles
Which of the following is an exogenous antigen?
A) a bacterium inside a cell B) a virus inside a cell C) a bacterium outside a cell D) a noninfected human cell E) the malaria parasite inside a red blood cell