During the pre-embryonic period, a single sperm passes through the zona pellucida. In the vast majority of cases, where does this process occur?
A) in the oviduct (fallopian tube) B) in the placenta
C) in the uterus D) in the ovary
Answer: A
Biology & Microbiology
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When oxygen is depleted, the citric acid cycle stops. What could we add to the system to restore activity (other than oxygen)?
What will be an ideal response?
Biology & Microbiology
Which offspring in the illustration above are
homozygous recessive for both traits? a. A b. B c. C d. D e. none of these
Biology & Microbiology
Where do the carbon atoms in glucose come from?
A. water B. NADPH C. carbon dioxide D. sunlight E. oxygen
Biology & Microbiology
Rothman and colleagues proposed that the specificity of a vesicle fusing with its target membrane lies in the interaction of pairs of proteins called v-(vesicle) and t-(target)
a. SNAPs. b. SNAREs. c. NSFs. d. COPs.
Biology & Microbiology