Egg envelopes, Biology

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.
Posted Date: 1/25/2013 12:11:58 AM | Location : United States







Related Discussions:- Egg envelopes, Assignment Help, Ask Question on Egg envelopes, Get Answer, Expert's Help, Egg envelopes Discussions

Write discussion on Egg envelopes
Your posts are moderated
Related Questions
Oxidation of malate to oxaloacetate Oxidation of malate to oxaloacetate: Malate  is oxidized to oxaloacetate  by malate dehydrogenase and NAD'  is  required as coenzyme.  Thi

Define Reagents for Determination of the Saponification Number of Fats? 0.5 N alcoholic KOH 0.5 N HCI Solid sodium carbonate 1% alcoholic solution of methyl orange


Countercurrent flow is the arrangement by which fish get oxygen from the water which flows by the help of their gills. The water flows across the respiratory surface of the gill i

What is eutrophication" describe its consequences on the life of plants and animals living in such waters. Why is oxygen depletion in a eutrophicated water-body faster at nigh

Availability of nutrients in soils  The productivity of a crop depends largely on the nutrients discussed in the previous section. It is important to find out methods which wil

Q. In the long term which are the organs affected by chronic Chagas' disease? In the chronic stage of Chagas' disease, that manifests years after the infection, the trypanosoma

Q. Management of Symptomatic Patients All symptomatic patients with severe aortic stenosis or even moderately severe aortic stenosis should undergo aortic valve replacement an

Embryo-sac : Embryo-sac is formed from megaspore mother cell. In embro-sac, there are 7 cells arranged in 3 groups. The 7 cells are one egg (female gamete), 2 synergids,

Yellow fever Yellow fever also known as Black Vomit and American plaque is a viral disease primarily of monkeys and transmitted to man by female Aedes mosquitoes. It is caused