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Certain organic compounds are required in small amounts in our diet but their deficiency causes specific disease. These compounds are called vitamins. Most of the vitamins cannot be synthesized in our body but plants can synthesize almost all of them. So they are considered as essential food factors. However, the bacteria of the gut can produce some of the vitamins required by us. All the vitamins are generally available in our diet. The term 'vitamin' was coined from the words vital + amine, since the earlier identified compounds had amino group. Vitamins are classified into two groups depending upon their solubility in water or fat namely-fat soluble vitamins and water soluble vitamins. Answer the following questions :
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Which of the following vitamins is water soluble?
Which of the following acids represents Vitamin C ?
(i) The structure of amino acid exists in the following two forms: [structure]. The above structure is an example of _____. If the side chain R is replaced by hydrogen, the amino acid is known as _____. (ii) Janice notices that her gums bleed while brushing and eating food. Name the water soluble vitamin which she should consume to prevent bleeding of gums. (iii) Which linkage holds two units of monosaccharides in a disaccharide?
