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Answers
Answer:
1⇒Amphoteric oxides react with both acids and alkalis to form salt and water.
Examples of amphoteric oxides are→
zinc oxide and aluminum oxide.
2⇒Advantages of vegetative propagation
→Quicker and more certain.
→Produces identical quality as the parent.
→Plants that do not have viable seed, can be reproduced.
→Flowers produced are of superior quality.
→Desirable character of fruit can be maintained
3⇒DNA copying is an essential part of the reproduction process because an organism's entire genetic information is contained within the DNA. If the DNA mutates, then there is a chance that the resulting organism may be born with a deformity or other genetic abnormality.
4⇒Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain constant.
Answer:
Enzymes are composed of one or several .......... (1) ........ chains. However, there are a number of cases in which non-protein constituents called ........(2)........ are bound to the the enzyme to make the enzyme catalytically active. In these instances, the protein portion of the enzymes is called the ..........(3)......... Three kinds of cofactors may be identified prosthetic groups, co-enzymes and metal ions. ..........(4).......... groups are organic compounds and are distinguished from other cofactors in that they are tightly bound to the apoenzyme. For example, in peroxidase and catalase, which catalyze the breakdown of hydrogen peroxide to water and oxygen, haem is the prosthetic group and it is a part of the active site of the enzyme. .......(5)......... are also organic compounds but their association with the apoenzyme is only transient, usually occurring during the course of catalysis, Furthermore co-enzymes serve as co-factors in a number of different enzyme catalyzed reactions. The essential chemical components of many coenzymes are vitamins, e.g., coenzyme nicotinamide adenine dinucleotide (NAD) and NADP contain the vitamin niacin.