Progression through the phases of the cell cycle is regulated by fluctuating concentrations of ____

a. microtubules
b. actin
c. cyclins
d. cyclin-dependent kinases
e. histones


C

Biology & Microbiology

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In the life cycle of a bread mold, the stage in which diploid nuclei occur is

A. the gametangium. B. the aseptate hypha. C. the asexual spores. D. the sporangium. E. the zygosporangium.

Biology & Microbiology

Which structure, A, B, C, or D, stores and releases calcium?

1.A 2.B 3.C 4.D

Biology & Microbiology

Substances that give up an electron to a free radical are called

a. reducing agents. b. oxidizing agents. c. neutralizing agents. d. antibiotics. e. antioxidants.

Biology & Microbiology

The transformation of water from a liquid to a gaseous state is referred to as ________

Fill in the blank(s) with correct word

Biology & Microbiology