Which Statement About Blocks to Polyspermy in Sea Urchins Is

question 2

Multiple Choice

Which statement about blocks to polyspermy in sea urchins is false?

• A) The fast block causes release of the acrosomal enzymes.
• B) Blocks to polyspermy prevent more than one sperm from entering an egg.
• C) The fast block occurs before the slow block.
• D) Blocks to polyspermy are triggered by fusion of the plasma membranes of the sperm and egg.
• E) The slow block to polyspermy takes about a minute to be put into place.

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