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Explain physical barrier for External Defence Mechanism - Skin
It provides nice protective covering to the body. The outer layer- horny layer - contains dead keratinized cells. These cells have hard insoluble fibrous proteins called keratin, instead of soft protoplasm. This layer is water proof and germ proof. It can prevent entry of virus and bacteria.
why does water erupt from geysers?
What are 6 characteristics of mastigophora
Explain the process of leaching- Temperature High temperatures hinder the process of leaching and cause an upward movement of soluble salts. Wherever, moisture conditions are
What a molecule is, and the difference between molecules and compounds? A molecule is made up of two or more atoms combined chemically. The atoms can be of the same element, as
Question 1 Which of the following is best control group for double blind Phase II clinical trial? Justify your Answer. Placebo Concurrent Control No-treatment Concurrent
Hormonal system: Most of us are not even aware that another system works constantly, along with the nervous system and the muscles, to direct our bodily functions. The system
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Burns : There are two types of burns which we are to discuss: 1) Chemical 2) Thermal Chemical burns have already been discussed in Sec. 16.7; so we shall discuss thermal
Vaccination: Now let us see how vaccination protects us from disease. We have mentioned above that the W.B.Cs. produce antibodies which neutralise the toxins produced by th
Ventures in Space: Sometimes the atmospheric conditions distort the light or radiowaves coming in from space. For instance, there may be a storm disturbing the radiowaves. O
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