In a typical cycling mammalian cell, _______ of the cell cycle is spent in interphase.
a. 99%
b. 95%
c. 75%
d. 50%
Ans: b. 95%
Biology & Microbiology
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The major defining characteristics of arthropods are (select all that apply)
A. their jointed legs. B. the chitin that forms their exoskeleton. C. their complex mouthparts. D. their trochophore larvae. E. metamorphosis.
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It has been proposed that the first living organisms were:
a. heterotrophs. b. autotrophs. c. chemosynthetic. d. photosynthetic. e. multicellular.
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The organ of Corti is a
a. chemoreceptor. b. mechanoreceptor. c. photoreceptor. d. nociceptor. e. osmoreceptor
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The genes of a single operon are all regulated by the same repressor, operator, and promoter.
Answer the following statement true (T) or false (F)
Biology & Microbiology