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

Explain the process of secretion, Explain the Process of Secretion In t...

Explain the Process of Secretion In the process of filtration through the glomerulus, the non-threshold substances and drugs are not cleared from the blood because the blood do

Explain functions of gastric juice - enzyme action, Explain Functions of Ga...

Explain Functions of Gastric Juice - Enzyme action Enzyme action: Pepsin begins the chemical digestion of proteins. It converts proteins to peptones. The enzyme rennin present

Properties of a beating heart - cardiovascular system, Properties of a Beat...

Properties of a Beating Heart Heart Let us study a few interesting properties of a beating heart which make it such a unique organ. 1. Automaticity 2. Rhythmicity 3. L

Spell, How long will it take me to get my ged.

How long will it take me to get my ged.

Explain the passive factors or passive soil formers, Explain the Passive Fa...

Explain the Passive Factors or Passive Soil Formers   Passive factors are by and large slow acting factors and include parent material, topography and time.

Earthquake, 1. city destroyed by earthquake in 1923? 2.the place where two ...

1. city destroyed by earthquake in 1923? 2.the place where two plates collide and one goes over top the other? 3.sudden stress changes in the earth that cause ground shaking.They o

Primate heritage, Primate Heritage: Man belongs to a group of  animal...

Primate Heritage: Man belongs to a group of  animals called mammals which are different  from other animal groups in possessing hair, and milk producing mammary glands, among

Need for safety and health regulations, NEED FOR SAFETY AND HEALTH REGULATI...

NEED FOR SAFETY AND HEALTH REGULATIONS : Accidents in work place are caused by negligence at some level. Legal control is required when individuals and organisations fail to reali

First hominids, First Hominids The First Human Fossil The earliest huma...

First Hominids The First Human Fossil The earliest human like or hominid remains come from two separate East African sites. Ethiopia has yielded several hundred fossil fragment

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