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The human body does not produce :-
A
DNA
B
Vitamins
C
Hormones
D
Enzymes
Detailed Solution
Vitamins are organic compounds required in small amounts for normal growth and health.
Most vitamins cannot be synthesised by the human body, so they must be supplied in the diet; that is why they are called essential dietary factors.
(Only a few are made in limited amounts, for example vitamin D in the skin in sunlight.)
DNA is synthesised in every dividing cell by replication.
Hormones are produced by the endocrine glands.
Enzymes are proteins synthesised in the cells of the body.
So the human body does not produce vitamins.
Most vitamins cannot be synthesised by the human body, so they must be supplied in the diet; that is why they are called essential dietary factors.
(Only a few are made in limited amounts, for example vitamin D in the skin in sunlight.)
DNA is synthesised in every dividing cell by replication.
Hormones are produced by the endocrine glands.
Enzymes are proteins synthesised in the cells of the body.
So the human body does not produce vitamins.