Tag: nutrients and deficiency

All vitamins are synthesized by plants. They cannot be synthesized by human beings. Hence, they must be supplied through diet.

The vitamin which maintain the redox potentials of cells is ascorbic acid. It is also called as vitamin $C$. It is the component of plasma and extracellular fluids and so can control lipid peroxidationof cellular membranes, thus maintaining the redox integrity of cells. Vitamin $C$ along with zinc, iron and copper enhances the immunity of the body. It has therapeutic potential against neuro degenerative disease. It is a potent antioxidant and this activity is transition metal-dependent due to its reduction potential. In the absence of enzymes, vitamin $C$ reduces free $Fe^{+3}$ and $Cu^{+2}$ to reactive forms $Fe^{+2}$ and $Cu^{+1}$, which then participate in the radical-producing Fenton reaction.

Vitamin K is a naphthaquinone derivative. It contains isoprene units.
It is also called as "anti-haemorrhagic" vitamin.

Iron and cobalt are found in the body.

Given statement is false because Vitamin D is synthesised in skin cells in  presence of sunlight.

Vitamin E is also called Tocopherol. It is a reproductive vitamin. It is also called anti-sterility vitamin as its deficiency leads to sterility.

Because these are found in the earth's crust and all the metal salts which are found in earth's crust are called inorganic salts

Cyanocobalamine is vitamin $B _{12}$. It is manufactured by bacteria and can only be found naturally in animal products. Its main sources are liver of ox, fish, crab, milk, cheese, etc. Thus, it is not obtained from plants.

Liver is not the source of Vitamin - $B _1$