During spermatogenesis, each primary spermatocyte divides to eventually produce ________ spermatids
a. 1
b. 2
c. 4
d. 8
c
Biology & Microbiology
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Anoxygenic phototrophs grow photosynthetically only under aerobic conditions
Indicate whether this statement is true or false.
Biology & Microbiology
The enzyme that catalyzes carboxylation during photosynthesis is called ________
Fill in the blank(s) with correct word
Biology & Microbiology
Who first proposed the concept that simple organic molecules could form spontaneously from simpler raw materials?
a. Miller and Urey b. Charles Darwin c. Thomas Malthus d. Watson and Crick e. Oparin and Haldane
Biology & Microbiology
The molecules rhodopsin and retinal are involved in the sensory system that detects
A. sight. B. hot and cold. C. smell. D. hearing. E. balance.
Biology & Microbiology