Granulosa cells surround a:
a. primary oocyte.
b. secondary oocyte.
c. primary spermatocyte.
d. secondary spermatocyte.
e. Sertoli cell
A
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The sliding filament model of muscle contraction depends on the dynamic interactions between myostatin and
myoglobin proteins.
Indicate whether the statement is true or false.Discuss the tools used to see if human behavior has a genetic component, and give two examples of either normal or
abnormal behavior that appears to have a genetic component. What will be an ideal response?
How are immune cells able to detect foreign pathogens?
A) They detect foreign, unfamiliar chemical substances released by the invading cells. B) They are able to detect structures on the surfaces of foreign cells that are not found in the host. C) They can compare the DNA sequences from the foreign cells to host DNA.
The bacterium that causes spotted fever rickettsiosis (RMSF) is more likely to infect a human _____.
A) If an infected tick feeds for several hours B) When an infected tick initially penetrates the skin C) When contaminated tick feces dry and become airborne D) If the human is exposed to rodent feces containing the bacterium