1
Question
How many statements regarding amino acids is/are correct?
i. Glycine is the simplest form of amino acid.
ii. Lysine and arginine are major components of histone protein.
iii. Zwitter ions exist at acidic pH.
iv. Aspartic acid bears one amino and one carboxylic group.
How many statements regarding amino acids is/are correct?
i. Glycine is the simplest form of amino acid.
ii. Lysine and arginine are major components of histone protein.
iii. Zwitter ions exist at acidic pH.
iv. Aspartic acid bears one amino and one carboxylic group.
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Solution
The correct option is D 2
Glycine is the simplest amino acid with one amino group, 1 carboxylic group and one Hydrogen atom on its side chain. Histone is a basic protein rich in Lysine and Arginine. Zwitter ions exist at neutral pH also referred to as isoelectric pH. Aspartic acid consists of one amino group and 2 carboxylic groups. Hence, statements i and ii are correct , while iii and iv are wrong.So, the correct answer is '2'
Glycine is the simplest amino acid with one amino group, 1 carboxylic group and one Hydrogen atom on its side chain. Histone is a basic protein rich in Lysine and Arginine. Zwitter ions exist at neutral pH also referred to as isoelectric pH. Aspartic acid consists of one amino group and 2 carboxylic groups. Hence, statements i and ii are correct , while iii and iv are wrong.
So, the correct answer is '2'
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