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

Braiding technique for sp removal-endodontics principles, Braiding techniqu...

Braiding technique for SP removal: -    Three small size files inserted alongside the silver point. -    Files twisted together to engage silver point -    Withdraw the f

Genetic, Ask quesIn Cross 1, pure-breeding colored, starchy kernel plants (...

Ask quesIn Cross 1, pure-breeding colored, starchy kernel plants (C1Wx/C1Wx) were crossed to plants pure-breeding for colorless, waxy kernels (c1 wx/c1 wx). The F1 of this cross we

What happens within the cell in the first interface period, What are the ev...

What are the events that mark the beginning and the end of the first interphase period? What happens within the cell in this period? The first interphase period is the G1. It s

Why is colour an important characteristic of food, Q. Why is colour an impo...

Q. Why is colour an important characteristic of food? Colour is an important quality attribute in food although they do not necessarily influence their nutritional, flavour or

Infection - complications of cardiac surgery, Infection Due to the m...

Infection Due to the many invasive monitoring techniques, ET tube, urinary catheter, surgical interventions. Cultures of blood or sputum/urine/swab form the wound is don

Proximity between amino and ribosomes acids, Q. Why is the proximity betwee...

Q. Why is the proximity between amino and ribosomes acids important for the protein formation? What is the enzyme that catalyzes that reaction? The proximity between amino and

Haemodynamics of tricuspid regurgitation, Q. Haemodynamics of Tricuspid reg...

Q. Haemodynamics of Tricuspid regurgitation? Right Atrial pressure tracing shows a prominent ‘v' wave and these cannot be appreciated in a patient with atrial fibrillation. RV

External morphology of human heart, EXTERNA L MORPHOLOGY - Auricle ...

EXTERNA L MORPHOLOGY - Auricle 2 in number at broad area. Both are small, flap like cover ventricles like caps i.e. auricular appendix . It's skeleton is made up of mus

Use mathematical calculations to justify the answer, Using an average wavel...

Using an average wavelength of 450 nm (0.45 um) can you resolve two objects that sit greater than 200nm apart from one another? Use mathematical calculations to justify your answer

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