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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.
Primary source from plants for humans and animals
Are spatial and temporal scale important considerations in relation to
Question 1: (i) Show a diagram to show how temperature varies with altitude. Show clearly the location of the tropopause, stratopause and mesopause. (ii) Briefly explain the
Define Whole blood – Components of Blood This is rarely employed these days, only really in instances of severe blood loss. In place of it’s almost all time separated into its
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What is granite? Granite is a solid, igneous rock. It is formed by mica, quartz, feldspar and sometimes bits of other rocks as well. Granite is generally pink, white, or grey..
What are the functions of lymphocytes? The lymphocytes handle most of the bacterial and viral infection that we get. In fact, lymphocytes are directly involved with specific ac
can u explain me about ovaries and testes
how does pulse rate increase?
1. A cyclist ascends a hill of height 120 meters. The mass of cyclist plus bicycle is 100 kilograms. His efficiency is 25%. How many Calories does he burn? 2. A hiker in the Swi
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