Both cilia and flagella are involved in which of the following functions?
A) energy production
B) expelling waste
C) movement of cells or movement of material around a cell
D) division of the cell
E) production of proteins
Answer: C
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Tears protect the eyes by
A. stimulating opsonization. B. inflammation. C. flushing and lysozyme. D. flushing and lysozyme and vasodilation. E. vasodilation.
Can the PCR technique be used to copy an entire chromosome all at once?
A) No, only the genes would be copied. B) No, the PCR machine can only copy fragments of DNA. C) Yes, that is its primary function.
A male that mates for the optimal time will not fertilize all of the eggs carried by a female.
a. true b. false
In what way are a human and a crab similar?
A. Vertebrates and arthropods are deuterostomes. B. Both have closed circulatory systems. C. Both have muscles that pull against rigid skeletons. D. Both have a continuous growth pattern.