Which of the following statements about ribose is incorrect
A
It is a polyhydroxy compound
B
It is an aldehyde sugar
C
It has six carbon atoms
D
It exhibits optical activity
Medium
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C
It has six carbon atoms
c $Hint:$ A carbohydrate is a polyhydroxy aldehyde or ketone.
$Explanation- $Ribose is a monosaccharide having five carbons, thus called pentose sugar. Ribose is the most important pentose present in living organisms. It is an aldose sugar, having an aldehydic functional group. Its molecular formula is represented as $C_5 H_{10} O_5$ . The structural formula of ribose is as follow:
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A short peptide on complete hydrolysis produces $3$ moles of glycine $(G)$, two moles of leucine $(L)$ and two moles of valine $(V)$ per mole of peptide. The number of peptide linkages in it are $..............$.