This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Once fertilized, how does the egg prevent any further sperm from penetrating the zona pellucida? ... (Read 104 times)

bb

  • Hero Member
  • *****
  • Posts: 544
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


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Sassygurl126

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jun 18, 2018
Answer to Question 1

ANS: D

Answer to Question 2

ANS: A


bb

  • Hero Member
  • *****
  • Posts: 544
Reply #2 on: Jun 18, 2018
Thank you!


Sassygurl126

  • Sr. Member
  • ****
  • Posts: 320
Reply #3 on: Jun 18, 2018
Happy to help


« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Sperm in the fallopian tube. Sperm in the fallopian tube.
Sperm penetration of ovum Sperm penetration of ovum
The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets. The mask covers both the mouth and nose to prevent exposure to body fluids and airborne droplets.
Capillaries act as bridges between the arteries and veins. Valves in the veins prevent backflow as ... Capillaries act as bridges between the arteries and veins. Valves in the veins prevent backflow as ...
(a) Monozygotic (MZ) twins result from the fertilization of a single egg by a single sperm. After on (a) Monozygotic (MZ) twins result from the fertilization of a single egg by a single sperm. After on
Where and how sperm form. Where and how sperm form.
Video: Carbohydrate Metabolism: Introduction to renal processes and filtrate formation and composition

For a complete list of videos, visit our video library