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Explain about enzymes
All enzymes are proteins. Many enzyme proteins lack catalytic activity in the absence of a non-protein component, called a 'co-factor'. In this case, the inactive protein component of an enzyme is termed the 'apoenzyme' and the active enzyme, including the cofactor, the 'holoenzyme'. The cofactor may be an organic molecule, when it is known as a 'coenzyme' or it may be a metal ion.
Define Placental Transfer of Nutrients? The placenta is n transitory structure developing during pregnancy and lies implanted on the uterine wall. It is connected with the foet
Is crossing over important for the diversity of biological evolution? Sexual reproduction and recombination of linked genes (crossing over) are, with mutations, the main instru
what is an early stage of cell development
Biological Significance of Incompatibility Both interspecific and intraspecific incompatibility determines the degree of inbreeding and out breeding of plants. Self-incompati
KIDNEY S - Origin . They develop from the mesoderm of the embryo. The kidneys secrete three hormones: renin, erythropoetin and calcitriol. (i) Renin . Whenever the rat
Explain exotic species? Describe with the help of two examples how the exotic species disturb the native species of an ecosystem ?
Cleavage - Development Biology Cleavage or segmentation is a series of cell divisions of the fertilized .egg through which it is converted into a multicellular structure, call
Threatened Species - Wildlife Many plant and animal species are threatened by the possibility of extinction. However, the seriousness of the threat varies. For example, a spec
Medical and First Aid - Factors Affecting Occupational Health Depending on the type of work the industry must make arrangement for readily available medical facility. A nearby
What is Schistosomiasis? Explain in brief. A disease cause by the trematode parasite Schistosoma found around the world. Numerous species are responsible for diseases ranging f
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