In spermatozoa, a structure called the acrosome:
a. Contains dynein arms that control sperm motility
b. Contains proteolytic enzymes that function during fertilization of an ovum by sperm
c. Is a focal accumulation of rough endoplasmic reticulum
d. Localizes around mitochondria in the midpiece of the flagellum
e. Regulates the condensation of nuclear DNA
ANS: B
The acrosome contains enzymes that are utilized by a mature spermatozoon to penetrate the bar-riers surrounding the oocyte.
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