Provide a brief description/explanation about the following: A) The cortical reaction up to blastulation B) Direct...

Provide a brief description/explanation about the following:

A) The cortical reaction up to blastulation

B) Direct exchange with the environment vs indirect (systemic) change

C) Communication of neurons with other cells

Expert Solution

A) The cortical reaction is directly in the formation of the fertilization envelope.The main function of the fertilization is to combined the haploid set of chromosomes from the two individuals into the single diploid cells.In this cleavage is aseries of cell division without the growth.During cleavage the cytoplasam divides into small cells and forms Blastomeres.This results to form Blastula.In the certer cavity of blastula there is a blastocoel.In this the embryo gets divided to form into two cells tan it divided inti four cell and then into sixteen cell and then into the 32 cell . This type of process is called Blastulation.

B)The direct exchange in the environment is the root modification system.because it directly effects on the roots of theplants

indirect exchange in the environment is the nutrients.

c)There is a two process to transfer information from one to one cell a) Electrical b) Chemical

electrical : it propagate the signal within the neuron

chemical: they propagate the signal from nuron to the other muscle cells.

gladiator answered 1 year ago

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