Which of the following substances can be assimilated unchanged?
A
Vitamin
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B
Proteins
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C
Starch
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D
Lipids
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Solution
The correct option is A Vitamin Vitamins are organic substances that help our bodies to function properly. Being a general source of energy supply these are crucial for the activities carried out by the cells and organs as well as the functioning of the body's immune systems. The human body goes through the process of bio-assimilation, which is actually the combination of two processes that help supply the cells with nutrients. The absorption of vitamins like minerals takes place in the gastrointestinal tract where it is broken down by enzymes and through the physical process of mastication. There is no chemical alteration of the substance.