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

Spina bifida occulta, Spina Bifida Occulta There is no protrusion of ...

Spina Bifida Occulta There is no protrusion of the meninges but the vertebrae are bifid. There are three components of the spina bifida occulta. a) Vertebral- there is

Limitations of ecological pyramids, Limitations of Ecological Pyramids ...

Limitations of Ecological Pyramids The pyramid of energy is a significant improvement over the previous two types of ecological pyramids, yet all of them overlook one or anot

Where are blood cells made in the body, Where are blood cells made in the b...

Where are blood cells made in the body? Blood cells are made in the red bone marrow, e.g. in the ribs, sternum or vertebrae.

Describe the concept of soil testing, Describe the concept of soil testing ...

Describe the concept of soil testing Different grades of complex and mixed fertilizers are being marketed to suit the soil and crops of a region. The recommendations are made o

Prospects of meat products, P r o s p ec ts of meat products The ...

P r o s p ec ts of meat products The demand for convenience meat based fast food is ever increasing due to rapid industrialization and urbanization, higher standards of l

Abrasive action of water and wind, Abrasive action of water, ice and wind ...

Abrasive action of water, ice and wind Water is an important mechanical weathering agent both in liquid as well as in the frozen state.  Rain water carrying sediments, ice glac

What are the major theoretical models, Q. What are the major theoretical mo...

Q. What are the major theoretical models that try to explain the formation of the enzyme-substrate complex? There are two major models that explain the formation of the enzyme-

What is autophagic intracellular digestion?, Autophagic intracellular diges...

Autophagic intracellular digestion is the cellular internal digestion of waste and residual materials. In general it is completed by lysosomes. Autophagic intracellular digestio

Explain some features of aspergillus, Explain some Features of Aspergillus?...

Explain some Features of Aspergillus? The identifying features include: 1. Macroscopically Aspergillus colonies are powdery and are of different colours like green, blue, bl

What is prokaryotic chromosomes, The DNA of a bacterial cell,such as Escher...

The DNA of a bacterial cell,such as Escherichia coli is a circular double-stranded molecule  often  referred  to as the bacterial  chromosome.  The circular  DNA  is packaged into

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