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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.
INTRODUCTION : You have studied about the hazards of electricity in Unit 11 of Block 3. You have learnt that most of the electrical accidents like shock, fire, etc. occur often du
what do you mean by "super class" species "pisces"?
physical and chemical properties
Nematodes These are next to protozoa and are the abundant soil microfauna in soil. They are also called eelworms, thread worms or roundworms. Nematodes that feed on decayin
Question 1 Is it ethical to use Placebo in Clinical trial? What is your opinion and what do CIOMS and ICH guidelines say in this regard? Question 2 What is the role of ethics
Explain Fatigue - Respiratory Adjustments Fatigue means a state of decreased efficiency due to prolonged exertion. It may occur due to sustained muscle contraction. The muscles
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Q.How is soil formed? Soil is formed by breaking down of rocks at or near the surface of the Earth through various physical, chemical, and biological processes by various factor
Checking Breathing and Pulse : Before attempting to resuscitate a casualty, it is essential that you check his/her breathing rate and pulse. You can cause problems if you attempt
Autoclaved Heated in an instrument called as autoclave in which the boiling point of water can be elevated by increasing pressure more than atmospheric pressure.
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