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Author Question: Once fertilized, how does the egg prevent any further sperm from penetrating the zona pellucida? ... (Read 87 times)

bb

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on: Jun 18, 2018
Once fertilized, how does the egg prevent any further sperm from penetrating the zona pellucida?
 
  a. The zona pellucida becomes less viscous so that the surface receptors, which normally bind sperm, are no longer functional.
  b. The zona pellucida fuses with the first sperm's acrosome, and thus the surface receptors responsible for binding sperm become internalized.
  c. The zona pellucida disintegrates, and thus the sperm no long have surface receptors to bind to.
  d. The zona pellucida hardens and destroys the surface receptors that bind sperm.

Question 2

____ from the prostate gland helps prevent sperm loss by thickening the semen.
 
  a. Fibrinogen c. Collagen
  b. Elastin d. Flagellan


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Sassygurl126

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Reply #1 on: Jun 18, 2018
Answer to Question 1

ANS: D

Answer to Question 2

ANS: A


bb

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Reply #2 on: Jun 18, 2018
Thank you!


Sassygurl126

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Reply #3 on: Jun 18, 2018
Happy to help


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