In human fertilization, what distinguishes the acrosomal reaction, which is triggered by the zona pellucida, from a typical exocytosis event?

💡 Explanation

The acrosomal reaction involves targeted exocytosis, because the acrosome releases enzymes specifically at the point of contact with the zona pellucida to digest it, thereby enabling sperm penetration. Therefore, localized enzyme release is key, rather than non-specific dispersal as in typical exocytosis.

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