Proteases and acrosin are enzymes. How do they function in reproduction?
A) They neutralize the mucous secretions of the uterine mucosa.
B) They direct the sperm to the egg through chemical messengers.
C) They act to break down the protective barriers around the egg, allowing the sperm to penetrate.
D) Their function is unknown.
Answer: C) They act to break down the protective barriers around the egg, allowing the sperm to penetrate.