A: A Cofactor of an enzyme may be a prosthetic group.
R: NAD derived from niacin is a co-enzyme.
A: Linolenic acid is an essential fatty acid.
R: Linolenic acid cannot be synthesised in human beings.
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A: Hormones are not enzymes, but they can stimulate the release of enzymes.
R: Hormones are used up in metabolism, but enzymes can act over and over again.
A: Tertiary structure of protein molecules makes them biologically active.
R: It is the native configuration of protein molecules maintained by multiple covalent bonds only.
A: Dextrins are intermediate polysaccharides formed during hydrolysis of starch into sugar.
R: Ascorbic acid is a sugar derivative.
A: Non-competitive inhibitors do not affect Vmax.
R: In non-competitive inhibition, inhibitors and substrates bind at the same sites on the enzyme.
A: The polypeptide coil of collagen helix is strengthened by establishing a hydrogen bond between > NH - group of glycine residue of each strand with –CO group of other two strands.
R: In collagen, helix locking effect also occurs with the help of proline and hydroxyproline amino acid.
A: Allosteric enzymes do not show a typical Michaelis Menten constant or behaviour.
R: All enzymes work at the same pH.
A: α amylase of wheat endosperm has 16 isoenzymes.
R: In competitive inhibition, Vmax decreases.
A: Tertiary structure of a protein is necessary for many biological activities of proteins.
R: In protein, only right handed helices are observed.
26 videos|287 docs|64 tests
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26 videos|287 docs|64 tests
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