All of the following can lead to cancer except

a. mutagens.
b. Bacteria.
c. mutations.
d. UV radiation.
e. carcinogens.


B

Biology & Microbiology

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In humans, structures that show developmental homology with other chordates are

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A mutation that changes a codon that originally coded for an amino acid into a stop codon is a

A) frameshift mutation. B) missense mutation. C) silent mutation. D) nonsense mutation.

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Entry of a virus into the lytic cycle after lysogeny has been established is called ________.

A. induction B. lysogenic conversion C. lysogenic reversion D. None of the choices are correct.

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Which of the following statements regarding the surface of the skin is FALSE?

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