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
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