________ radiation excites atoms to a higher energy state within molecules such as DNA that then leads to the formation of pyrimidine dimers.

What will be an ideal response?


Nonionizing; UV; Ultraviolet

Biology & Microbiology

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What phenomenon accounts for the appearance of chloroplasts in some unicellular phototrophic eukaryotes?

A) endosymbiosis B) secondary endosymbiosis C) sequencing of chloroplasts' SSU genes D) horizontal gene transfer

Biology & Microbiology

Which of the following is associated with retrograde movement?

A) dynein B) actin C) tubulin D) myosin E) kinesin

Biology & Microbiology

The organs of excretion in flatworms are

a. nephridia. b. contractile vacuoles. c. Malpighian tubules. d. flame cells. e. book lungs.

Biology & Microbiology

Cytomegalovirus infection of the retina is now treated with (interferon/fomivirsen/ganciclovir), the first antisense RNA drug

What will be an ideal response?

Biology & Microbiology