How cells join together, Science

Assignment Help:

In a unicellular organism, the interior  region of  the organism  is no longer in contact with the external environment.  Thus simple processes  of  diffusion, phagocytosis, exocytosis and contact with sea water helped in exchanging  the necessary molecules  and nutrients. But a further increase in size and complexity of the organism lead to concentration of the pool of cytoplasm. The fluid in-between the cells was known as interstitialfluids.

These fluids, due to constant exchange of molecules between the various cells lead to changes in the internal environment which influenced the functioning of the cell. Physiology, we learnt earlier,  is concerned with such basic activities as reproduction, growth, metabolism, excitation and contraction as they are carried out within the fine structure  -  the cells, tissues, organs and organ systems of the body. The various body systems of our body are enumerated next.


Related Discussions:- How cells join together

Water extinguishers, Water extinguishers :  Direct the jet at the base of ...

Water extinguishers :  Direct the jet at the base of the flame and keep it moving across the fire. Attack a fire which is spreading vertically at its lowest point and follow th

Explain the mixing movement of the gastrointestinal tract, Explain the Mixi...

Explain the Mixing Movement of the Gastrointestinal Tract This movement helps the intestinal contents to be thoroughly mixed at all times. It is usually caused by the local con

Biogas, Biogas You may have heard of the use of cattle dung for produ...

Biogas You may have heard of the use of cattle dung for production of biogas which is used for cooking. Water weeds like water hyacinth, water lettuce, salvinia, hydrilla, du

Floating a razor blade, Floating a razor blade Secure a used razor blad...

Floating a razor blade Secure a used razor blade of the double edge type. Try floating it on the surface of water. Again watch the surface and see if the surface film dips unde

The effect of soap on surface tension, The effect of soap on surface tensio...

The effect of soap on surface tension Select a large plate and rinse it unless you are sure that it is very clean. Fill the plate with cold water and let it stand for a time on

Define proteins - abnormal constituents of urine, Define Proteins - Abnorma...

Define Proteins - Abnormal Constituents of Urine Proteins: Abnormal amounts of proteins are excreted in certain inflammatory diseases like glomerulonephritis (inflammation of t

Earth''s layers, how are the earth''s layers formed?

how are the earth''s layers formed?

Matter, what is the space that takes up matter

what is the space that takes up matter

Explain nervous phase of pancreatic secretion, Explain Nervous Phase of Pan...

Explain Nervous Phase of Pancreatic Secretion Nervous phase: When stomach secretes gastric juice in cephalic phase and gastric phase, nerve impulses are simultaneously transmit

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