Dental Admissions Test (DAT) Practice Test

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Prepare for the Dental Admissions Test (DAT) efficiently. Utilize flashcards and multiple-choice questions with helpful explanations. Ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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Which part of the egg do sperm cells bind to during human fertilization?

Cytoplasm
Eggshell
Nucleus
Zona Pellucida

The correct answer is: Zona Pellucida

During human fertilization, sperm cells bind to the zona pellucida, which is a glycoprotein layer surrounding the plasma membrane of the egg cell. This binding is crucial for a successful fusion between the sperm cell and the egg cell, leading to the formation of a zygote. The zona pellucida plays a key role in allowing only one sperm cell to penetrate and fertilize the egg, preventing polyspermy. Therefore, option D is the correct answer.