Advertisements
Advertisements
Question
Assertion: All naturally occurring α-aminoacids except glycine are optically active.
Reason: Most naturally occurring amino acids have L-configuration.
Options
Assertion and reason both are correct statements and reason explains the assertion.
Both assertion and reason are wrong statements.
Assertion is correct statement and reason is wrong statement.
Assertion is wrong statement and reason is correct statement.
Assertion and reason both are correct statements but reason does not explain assertion.
Solution
Assertion and reason both are correct statements but reason does not explain assertion.
Explanation:
Expect glycine, all other naturally occurring α-amino acids are optically active, since the α-carbon atom is asymmetric. These exist both in 'D' and 'L' forms. Most naturally occurring amino acids have L-configuration. L-Amino acids are represented by writing the –NH2 group on left-hand side.
APPEARS IN
RELATED QUESTIONS
What are monosaccharides?
Draw ring structure of α - D - (+) - glucopyranose.
Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.
Write the product obtained when D-glucose reacts with H2N − OH.
How do you explain the absence of aldehyde group in the pentaacetate of D-glucose?
Which one of the following is a monosaccharide:
starch, maltose, fructose, cellulose
The letters ‘D’ or ‘L’ before the name of a stereoisomer of a compound indicate the correlation of configuration of that particular stereoisomer. This refers to their relation with one of the isomers of glyceraldehyde. Predict whether the following compound has ‘D’ or ‘L’ configuration.
Naturally occurring glucose is called as ______.
