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Fertilization — General Embryology & Gametogenesis
Embryology Question Bank
Embryology Question Bank
Fertilization
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Fertilization MCQs: practice questions
Sample Fertilization multiple-choice questions from General Embryology & Gametogenesis.
What is the fate of sperm mitochondria after fertilization?
- A. They degenerate
- B. They form the female pronucleus
- C. They become polar bodies
- D. They form the placenta
- E. They form the blastocyst cavity
Which sperm molecule interacts with ZP3 receptors?
- A. Acrosin only
- B. hCG
- C. Progesterone
- D. DNA polymerase
- E. Glycosyltransferases
What happens to the sperm cell membrane at the fusion area?
- A. It becomes trophoblast
- B. It becomes the zona pellucida
- C. It breaks down
- D. It forms the female pronucleus
- E. It forms the blastocyst cavity
What triggers the cortical reaction?
- A. Implantation
- B. Sperm entry into the vagina
- C. Cleavage
- D. Sperm contact with the secondary-oocyte cell membrane
- E. LH binding to the ovary
Where does capacitation occur?
- A. Amnion
- B. Female reproductive tract
- C. Yolk sac
- D. Testis
- E. Ovary
What is released during the acrosome reaction?
What is syngamy?
Which sequence correctly represents fertilization?
What is the first broad phase of fertilization?
Which activity is unmasked during capacitation and assists sperm binding?
What results from fusion of male and female pronuclei?
What does the sperm nucleus become?
Which sperm-derived structure supplies the microtubule-organizing center needed after fertilization?
Why is the sperm centriole pair important?
Which enzyme specifically helps sperm penetrate the zona pellucida?
What is sperm capacitation?
What is released during the cortical reaction?
What contributes to sperm penetration of the corona radiata?
What is the origin of mitochondrial DNA in the zygote?
What chromosome state is restored at fertilization?
What happens to adherent sperm plasma proteins during capacitation?
Which event immediately follows sperm-oocyte membrane fusion?
What happens to the sperm tail after fertilization?
What does sperm binding to the zona pellucida trigger?
What happens to the secondary oocyte after sperm entry?
Where does fertilization normally occur?
What is the polyspermy block?
What happens to sperm receptors on the zona pellucida after the cortical reaction?
What happens to the oocyte's centriole pair during meiosis?
What is the major function of the cortical reaction?