Acrosome Damage Impairs Sperm Penetration

Steps:

• Identify acrosome function: cap on sperm head containing enzymes for egg penetration.
• Link damage to storage: substances harm acrosomes, preventing enzyme release.
• Connect to fertility: without penetration, fertilization fails despite reaching egg.
• Evaluate choices: select option matching penetration role.

Why A is correct:

• Acrosome enables sperm to digest zona pellucida via hydrolytic enzymes, allowing fusion with egg membrane.

Why the others are wrong:

• B: Sperm motility relies on flagellum, unaffected by acrosome damage.
• C: Egg detection involves chemotaxis receptors on sperm tail, not acrosome.
• D: Identical to C; same reasoning applies.

Final answer: A