« previous next »

Author Question: In a newly fertilized egg, the vitelline layer A) opens the egg's nuclear membra (Read 813 times)

sammy

  • Hero Member
  • *****
  • Posts: 818
on: Oct 2, 2013
In a newly fertilized egg, the vitelline layer
A) opens the egg's nuclear membrane to allow haploid sperm DNA to enter.
B) hardens to form a protective cover.
C) secretes hormones that enhance steroidogenesis by the ovary.
D) reduces the loss of water from the egg and prevents desiccation.
E) provides most of the nutrients used by the zygote.


Yolanda

  • Hero Member
  • *****
  • Posts: 757
Reply #1 on: Oct 7, 2013

For sure it has to be B Mark as solved once you're done!


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

Nurse opens sterile package Nurse opens sterile package
The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ... The coolant temperature is controlled by the thermostat, which opens and allows coolant to flow to ...
A point-type ignition system showing the distributor cam which opens the points A point-type ignition system showing the distributor cam which opens the points
An ice-free summer opens the Arctic for exploration An ice-free summer opens the Arctic for exploration
Berger and colleagues (2010) explored how newly-walking toddlers crossed different bridges. Berger and colleagues (2010) explored how newly-walking toddlers crossed different bridges.
Microinjecting DNA into a fertilized egg Microinjecting DNA into a fertilized egg
Video: Stroke volume - preload, sarcomere length and Frank -Starling law

For a complete list of videos, visit our video library