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Biomolecules — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryBiomolecules2 Marks
Question
Why $B$ complex vitamine compounds are essential for us? Describe their important sources.
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Answer

$\rightarrow$ Deficiency of vitamin $B_1($thiamine$)$ leads to the disease like Beriberi $($loss of appetite, retarded growth$).$
So, it is essential for us. Important sources are yeast, milk, green vegetables and cereals. etc....
$\rightarrow$ Deficiency of vitamin $B_2 ($Riboflavin$)$ leads to the cheilosis $($fissuring at corners of mouth and lips$),$ digestive disorders and burning sensation of the skin, so it is essential for us. Important sources are milk, egg white, liver and kidney.
$\rightarrow$ Deficiency of vitamin $B_6($Pyridoxine$)$ leads to convulsions so it is essential for us. Important sources are yeast, milk, egg yolk, cereals and grams
$\rightarrow$ Deficiency of vitamin $B_{12}$ leads to pernicious anaemia $\ce{(RBC}$ deficient in haemoglobin$),$
so it is essential for us. Important sources are meat, fish, egg and curd.

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