Dental Admissions Test (DAT) Practice Test

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Where do sperm cells bind during human fertilization?

Endoplasmic reticulum
Golgi apparatus
Nucleus
Zona Pellucida

The correct answer is: Zona Pellucida

During human fertilization, sperm cells bind to the zona pellucida, which is the thick protective layer surrounding the oocyte (egg cell). Option A, the endoplasmic reticulum, is a cellular organelle responsible for protein and lipid synthesis, and has no direct role in fertilization. Option B, the Golgi apparatus, is responsible for modifying, sorting, and packaging proteins and has no direct role in fertilization. Option C, the nucleus, is the control center of the cell and contains genetic material, but it is not directly involved in fertilization. Therefore, option D, the zona pellucida, is the correct answer.