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Minerals and Trace Elements
Oxygen, carbon, hydrogen and nitrogen are the most common elements that make up 96% of the total weight of a mammal. The next most abundant elements are calcium, phosphorus, potassium, sulphur, sodium, chlorine and magnesium. These make up nearly the remaining 4%.
Fifteen additional elements are required but their total combined amount in mammalian body is less than 0.01% of the body weight. Of the known 90 naturally occurring elements how many are essential for life? This is not known for many animals. In humans 26 elements are known to be necessary.
Explain what is Light Microscope - Microscopy Modern light microscopes are compound microscopes. Here the magnified image formed by the objective lens is further enlarged by on
Most of the water taken up by a plant passes through it and is evaporated to the atmosphere. What use is made of the tiny fraction of this water which is retained by the plant?
Amino acid is any of a class of 20 molecules which are combined to form the proteins in living things. Consisting of the general formula NH2-CHR-COOH, where "R" is the side chain
Q. What are the modes of transmission, main signs and symptoms and treatments of hepatitis B? The Hepatitis B is a disease caused by a DNA virus. The transmission is by blood (
What is competition? Which type of ecological interaction is competition? Competition is the ecological interaction in which the individuals explore the similar ecological nich
Determine the Factors that Affecting Food Choice? As a dietician, it is necessary to understand how our food choices are affected. Every day we make food choices which influenc
Diagram of a cell surface membrane. State the width of a cell surface membrane. (i) On which side of the membrane, shown in Figure, X or Y, is the cytoplasm of the cell?
description of first five phylum
Some amount of energy is generatred from the oxidation of food materials is released as heat. This can be proved by germinating seeds. Aim: To show that heat is liberated during re
Define the Recommended Dietary Allowances of Vitamin K? Recommended dietary intakes have not been suggested for different age groups or gentler. The safe levels of intake have
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