Vitamin B2–Pellagra
Vitamin B12–Pernicious anaemia
Vitamin B6–Beri-beri
Beri-Beri is caused by a deficiency of vitamin B1 (thiamine), not vitamin B6 (pyridoxine).
So, the correct option is (D): Vitamin B6–Beri-beri
Given below are two statements:
Statement I: Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.
Statement II: When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor.
In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements:
Statement I: In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid.
Statement II: In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome.
In the light of the above statements, choose the correct answer from the options given below :
Cellulose does not form blue colour with iodine because
Melonate inhibits the growth of pathogenic bacteria by inhibiting the activity of
| List - I | List - II | ||
| (a) | Manganese | (i) | Activates the enzyme catalase |
| (b) | Magnesium | (ii) | Required for pollen germination |
| (c) | Boron | (iii) | Activates enzymes of respiration |
| (d) | Iron | (iv) | Functions in splitting of water during photosynthesis |
Vitamins are natural and essential nutrients. In the growth and development of the human body it plays an important role. For proper growth, strong bones and good development needs the right quantity of vitamins in our body. These vitamins are organic substances that work in groups for the normal and smooth functioning of our body cells.
There are two main types of vitamins.
Fat-soluble vitamins are stored in the fat cells. These vitamins require fat in order to be absorbed. Vitamin A, D, E and K are fat-soluble vitamins.
Water-soluble vitamins are not stored in our body because its excess gets excrete through the urine. Therefore, these vitamins need to be replenished constantly. Vitamin B and C are water-soluble vitamins.