Egg envelopes, Biology

Assignment Help:

Egg Envelopes

Like any other cell, all the eggs are covered by the cell membrane or plasmalemma It is with two layers of about 50 A? (unit membrane) separated by a gap of 60 A?. In addition to plasmalemma, the eggs of practically all animals are surrounded by special egg envelopes (or egg membranes).

Based on their origin, types of egg envelopes are

  • Primary or
  • Secondary ones.

Related Discussions:- Egg envelopes

State about inferior alveolar nerve and artery, Inferior alveolar nerve and...

Inferior alveolar nerve and artery A branch of mandibular nerve, it enters the mandibular foramen on the medial aspect of the ramus above the lingula and exits on the lateral a

State the terms complete alimentary tract, State the terms complete aliment...

State the terms complete alimentary tract, complete digestive tract and complete gut? A digestive tract which has an anal and oral opening. This adaptation allowed for a linear

Avian tuberculosis, Avian tuberculosis The infection in poultry usuall...

Avian tuberculosis The infection in poultry usually occurs from ingestion of contaminated food and water. The lesions develop in spleen, liver and intestines; less frequently

Explain how is cancer related to ras, Can someone explain how is cancer rel...

Can someone explain how is cancer related to ras and p53 gene? I know that the ras protein regulate cell growth and its mutation will cause cancer. How is the mutation caused?

Symptoms of chronic gastritis, Q. Symptoms of chronic gastritis? These ...

Q. Symptoms of chronic gastritis? These include anorexia, chronic fatigue, and feeling of fullness, belching, vague epigastric pain, nausea and vomiting and passage of black ta

Photosynthesis, photosynthesis moderates global warming, briefly explain th...

photosynthesis moderates global warming, briefly explain this statement

Benthos - aquatic ecosystem, Benthos - Aquatic Ecosystem The benthos o...

Benthos - Aquatic Ecosystem The benthos or the benthic organisms are those found living in or on the bottom or benthic region of the water mass. They exhibit a variety of adap

Define the first step to envision the pattern of deformation, Define the fi...

Define the first step to envision the pattern of deformation. The first step in the analysis is to envision the pattern of deformation that would accompany such a failure. In t

How hermaphrodite species present cross-fecundation, Is it possible for a h...

Is it possible for a hermaphrodite species to present cross-fecundation? There are hermaphrodite species of animals and plants that present cross-fecundation mainly because of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd