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Observing where soil bacteria live
Dig up a clover, alfalfa or soy-bean plant. Carefully increase all the soil from the roots and see if you can find the little white nodules on the roots. These are where the nitrogen fixing bacteria so significant to soil fertility are found.
Q. What is the most abundant form under which nitrogen is found in nature? The major abundant nitrogen-containing molecule found in nature is molecular nitrogen (N2). The air i
What are the two main types of endocytosis? Endocytosis can be divided as pinocytosis or phagocytosis. In pinocytosis small particles on the external surface of the membrane ex
Give three examples of cell structures which contain structural proteins. What is the other type of protein in a cell? (a) Cytoplasm, the cell membrane, memb
Solitary and Colonial Forms Animals may lead their lives either like individuals or in groups. While they exist as individuals, they are termed as solitary, but if they live i
Describe the appearance of a single E. coli colony. Why can it be considered genetically homogenous?
Q. How are the excretory systems of the three major arthropod classes constituted? In crustaceans a pair of excretory organs called green glands exists, the green glands collec
Density of Water in Relation to Temperature On cooling, water molecules come closer which makes water dense. It is most dense at 4°C (Figure shown below) but it is still a liqu
Define Essentiality of Nitrogen for Growth of Micro-Organism? Nitrogen is an essential atom in certain cellular macromolecules, e.g. amino acids, purines, pyrimidines, enzymes,
Sub Xyphoid Pericardial Window : It could be done under local or general anaesthesia. A small vertical midline incision is made over the xyphoid process on to the linea alba
Neuropsychological assessmnet of older children In the recent years, the field of child neuropsychology has undergone tremendous growth. There has been a burgeoning interest in
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