The Fast Block to Polyspermy Involves the

question 108

Multiple Choice

The fast block to polyspermy involves the

• A) release of inhibitors of acrosomal enzymes.
• B) synthesis of a new sperm-resistant membrane.
• C) accumulation of calcium ions in the acrosome.
• D) opening of ion channels that change the polarity of the egg membrane.
• E) destruction of excess bindin receptors on the sperm.

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