Which is not true concerning Sertoli cells?
a. They secrete hormones.
b. They are joined by tight junctions.
c. They form a blood-testis barrier.
d. They phagocytize discarded sperm cytoplasm.
e. They facilitate the movement of sperm into the blood.
E
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Which are characteristics that distinguish mammals from other vertebrates? Check all that apply.
_____ hair _____ endothermy _____ specialized teeth _____ enlarged skull _____ mammary glands
Most commonly, individuals of a population show a ________ distribution through their habitat
Fill in the blank(s) with correct word
Which of the following terms is NOT related to the other four?
a. amino acids b. nucleotides c. 5-carbon sugars d. phosphate groups e. nitrogen-containing bases
In females, LH promotes the monthly development of the egg and FSH causes release of the egg from the ovary
Indicate whether the statement is true or false