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Body Fluids – Circulation
Many sorts of evidences have led biologists to the conclusion that life had its origin in the ancient seas. It is not surprising, therefore, that the protoplasm of early organisms had many properties in common, with seawater that bathed them, and that ' life processes evolved a close dependence on the stable conditions existing in seawater.
Figure: Fluid compartments of the body. All exchanges with the environment occur across plasma.
The evolution of multicellular animals involved the development of body fluids - tissue fluids, blood and lymph that could provide all body cells with a stable .and relatively non-fluctuating environment, and fill all spaces between cells and cell layers. The body fluids are divided into two main phases intracellular and extracellular. The extracellular fluid is further subdivided into blood plasma and interstitial fluid. The blood plasma is contained in blood vessels and interstitial fluid fills the spaces around the cells. Nutrients and gases passing between blood vessels and cells have to cross this fluid. The interstitial fluid is formed constantly by filtration from the blood plasma through the capillary walls.
Transport with the Help of Membrane Protein Even though, the lipid bilayers do not permit the entry of polar molecules such as ions, sugars, amino acids, nucleotides and cell
(i) Name one fibrous and one globular protein. fibrous globular (ii) Outline the difference in structure between a fibrous and a globular protein. ' shows the ef
Equine encephalomyelitis Encephalomyelitis or inflammation of the brain tissue and the spinal cord, can be brought about by different viruses. Eastern-, Western- and Venezuelan
Explain vegetable sterilization process Canning, which involves heat sterilization, is one of the most important processes in vegetable preservation. As compared to other foods
EXPLAIN THE CONSTITUENT OF FOOD GROUPS AND THEIR SOURCES
Q. What is the pH inside the stomach? Why is there a need to keep that pH level? How is it maintained? Which are the cells that produce that pH? The normal pH of the gastric ju
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What is the other name given to sex chromosomes? Sex chromosomes are also known as allosomes (the other chromosomes that are not sex chromosomes are known as autosomes).
What food items include in full liquid diet - Soups and broths - Cereal porridges (refined cereals) - Milk and milk beverages, yoghurt - Coffee, tea, fruit juices
what is the composition of urine in fishes and reptiles ?
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