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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.
Saponification :- Fats when boiled with alcoholic solution of NaOH or KOH undergo hydrolysis into glycerol and fatty acids and the latter form soaps with Na or K. The
Explain the Metabolic activities of the kidney For synthesis of creatine, three amino acids glycine, arginine and methionine are involved directly. The first reaction is to for
lable the direction of increasing frequency and the direction of increasing wavelength on the em.
what is ecology
Define the both macronutrientand micronutrient. An element necessary in large amounts (usually > 50 mg/kg in the plant) for the growth of plant is called a macronutrient and in
Explain the Composition of Bile Bile is a complex fluid. It is yellowish green in colour and bitter in taste. It consists of: Water Mineral salts (chloride, potassium
To show how soil is formed from rocks Carefully heat a piece of glass in a flame and then plunge it into cold water. The unexpected cooling of the glass causes it to contract u
Define Erythroblastosis Fetalis Besides the risk of a mismatch reaction during a second or during any subsequent blood transfusion, giving Rh-positive, blood involves risk in
Explain the Role of secretin Secretin is a polypeptide containing 27 amino acids. It is present in the mucosa of the upper small intestine in an inactive form prosecretin. When
what is the scientific classification of a protozoan
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