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

Objectives of fire hazards, Objectives After studying this unit you sho...

Objectives After studying this unit you should be able to: 1.  explain the significance of the fire triangle, 2.  list common causes of fire, 3.  describe the purpose

Summer solstice in the southern hemisphere, On the day of the summer solsti...

On the day of the summer solstice in the Southern Hemisphere, the sun can be seen overhead at what location around the globe? At Tropic Of Capricorn

Explain internal respiration, Explain Internal Respiration What do you ...

Explain Internal Respiration What do you understand by the term 'internal respiration'? Well, the interchange of gases between the blood and cells of the body is internal respi

The broad area of Scientific activity, Describe the factors which decide th...

Describe the factors which decide the broad area of Scientific activity

Landforms, is a grassland a type of landform

is a grassland a type of landform

Treatment and disposal scope of first aid, Treatment: First aid treatment ...

Treatment: First aid treatment is a set of actions taken to preserve life of the casualty, prevent the conditions from becoming worse and promote his/her recovery. Disposal:

Explain genetic theory of ageing, Explain Genetic Theory of ageing Rate...

Explain Genetic Theory of ageing Rate of ageing varies between species. The difference is in the genetic changes in the species. Thus it can be said that gradual impairment of

Expanding universe, The Expanding Universe: Hubble's observations had...

The Expanding Universe: Hubble's observations had proved  the existence of  galaxies. After mapping as many galaxies as could be seen by  the telescopes then'available, he tu

Weather, which instrument measure the air pressure

which instrument measure the air pressure

Explain factors regulating blood pressure, Explain Factors Regulating Blood...

Explain Factors Regulating Blood Pressure Blood pressure regulating mechanisms may be classified into two categories: a)  Short term regulating mechanisms, which regulate an

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