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What part do (a) nitrifying, (b) nitrogen-fixing and (c) denitrifying bacteria play in the nitrogen cycle?
a) Nitrifying bacteria in the soil change ammonia and other nitrogenous substances (e.g.urea) into nitrates.
b) Nitrogen-fixing bacteria (in the soil or in root nodules) convert gaseous nitrogen into nitrogenous compounds.
c) Denitrifying bacteria in the soil, decompose nitrogenous compounds to make gaseous nitrogen
How many distinct hexapeptides can be made from 20 amino acids?
Fischer 's template or lock and key model According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even in the a
Q. Describe Lipoprotein? Ans. There is considerable current interest in this lipoprotein, which consists of LDL with an additional apoprotein-apoprotein (a) attached to it
Evaluation of Specific Radiographs Intra oral peri apical radiographs, cephalograms, panoramic radiographs and Computed tomographies are necessary for complete survey of teeth
Measurement of Nitrogenase Activity There are various methods to find out whether an organism is a N 2 -fixer or not. If an organism can grow in normal atmosphere without any
Contrast the reproduction of bacteria with that of frogs. Bacteria replicate asexually by splitting in two. Frogs reproduce sexually by producing sperm and eggs. One sperm and
The fusion of two individuals with each acting as a gamete is known as
Define Factors affecting Absorption of Dietary Iron? There are mainly four factors that determine iron bioavailability absorption from the diet. These include: i) Form of ir
What are some economic applications that can be generated by very biodiverse ecosystems? Very biodiverse areas show enormous economic potential. They can be a source of raw mat
Dicots are one of the two main types of flowering plants; characterized by having two cotyledons, floral organs arranged in the cycles of four or five, and leaves with the reticul
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