In the Fast Block to Polyspermy,binding of Sperm Opens Up

question 10

Multiple Choice

In the fast block to polyspermy,binding of sperm opens up __________ channels,which depolarizes the egg membrane and __________.

• A) Na⁺;prevents the entrance of any more sperm
• B) Na⁺;prevents the entrance of more Na⁺
• C) Na⁺;prevents the entrance of Ca²⁺
• D) Ca²⁺;prevents the entrance of any more sperm
• E) Ca²⁺;prevents the entrance of more Na⁺

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