Enzymes that catalyze the same reaction but have different chemical compositions and physical properties are called isozymes.

The active site of an enzyme determines specificity of an enzyme by its structure.

In B-DNA, the number of nucleotides per turn is 10.

Hormone relaxin is secreted by ovary.

Implantation of fertilized egg or young embryo occurs under the influence of progesterone.

Deficiency of thyroxine or hypothyroidism in adults results in myxoedema.

Adernal cortex is controlled in its activity by a hormone of pituitary known as ACTH.

Metamorphosis in tadpole of frog is accelerated by thyroid hormone.

Oversecretion of growth hormone in adult produces acromegaly.

Vitamin D is synthesised in human body with the help of sun light.

Vitamin A is necessary for the synthesis of retinal pigment rhodopsin .

Vitamin C is a fat insoluble vitamin or water soluble vitamin.

Deficiency of B1-thiamin causes beriberi, loss of appetite and fatigue.

Chemical name of vitamin C is ascorbic acid.

Deficiency of vitamin C causes scurvey.

Iodine (I) is found in thyroid hormones.

Antirickets vitamin is D or calciferol.

Element necessary for blood clotting is calcium (Ca).

Vitamin C is found in amla, citrus fruit, etc.

Glycine is the simplest amino acid. Its chemical formula is NH₂CH₂COOH.