NEET Test Series from KOTA - 10 Papers In MS WORD
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BIOMOLECULES(NCERT)
277939
The simplest amino acid is
1 glycine
2 proline
3 leucine
4 tryptophan
Explanation:
(a) Glycine is the simplest amino acid with lowest molecular weight. The side chain in glycine is represented by $\text{H}$ (Hydrogen) atom (not alkyl group). Due to 2-opposite $\text{H}$-atoms, this amino acid is symmetrical or achiral. All other amino acids are assymetrical or chiral, and can exist as D- and L-stereoisomers.
NCERT Page- 144 / N- 106
BIOMOLECULES(NCERT)
277940
Choose the mismatched pair
1 Glutamic acid-Acidic
2 Lysine-Basic
3 Valine - Charged
4 Phenylalanine-Aromatic
Explanation:
(c) Valine is a neutral essential amino acid which contains equal number of amino and carboxylic group.
NCERT Page-144/ N-106
BIOMOLECULES(NCERT)
277941
Which of the following is not an aromatic amino acid?
1 Thereonine
2 Tyrosine
3 Tryptophan
4 Phenylalanine
Explanation:
(a) Threonine is a hydroxy-amino acid and does not have benzene ring.
NCERT Page-144 / N-106
BIOMOLECULES(NCERT)
277942
Which of the following statement is incorrect about amino acid?
1 The amino group and carboxylic group of an amino acid are attached to both amino and carboxylic groups to alpha carbon.
2 Amino acids have an$\text{N}$-terminus, $\text{C}$-terminus, and $R$ groups.
3 Amino acid can be classified by the number of peptide bond.
4 Essential amino acids are not synthesised in the body, therefore have to be provided in the diet.
Explanation:
(c) Amino acids are the building blocks of proteins. Amino acid can be classified on the basis of characteristics of their side chains.
(a) Glycine is the simplest amino acid with lowest molecular weight. The side chain in glycine is represented by $\text{H}$ (Hydrogen) atom (not alkyl group). Due to 2-opposite $\text{H}$-atoms, this amino acid is symmetrical or achiral. All other amino acids are assymetrical or chiral, and can exist as D- and L-stereoisomers.
NCERT Page- 144 / N- 106
BIOMOLECULES(NCERT)
277940
Choose the mismatched pair
1 Glutamic acid-Acidic
2 Lysine-Basic
3 Valine - Charged
4 Phenylalanine-Aromatic
Explanation:
(c) Valine is a neutral essential amino acid which contains equal number of amino and carboxylic group.
NCERT Page-144/ N-106
BIOMOLECULES(NCERT)
277941
Which of the following is not an aromatic amino acid?
1 Thereonine
2 Tyrosine
3 Tryptophan
4 Phenylalanine
Explanation:
(a) Threonine is a hydroxy-amino acid and does not have benzene ring.
NCERT Page-144 / N-106
BIOMOLECULES(NCERT)
277942
Which of the following statement is incorrect about amino acid?
1 The amino group and carboxylic group of an amino acid are attached to both amino and carboxylic groups to alpha carbon.
2 Amino acids have an$\text{N}$-terminus, $\text{C}$-terminus, and $R$ groups.
3 Amino acid can be classified by the number of peptide bond.
4 Essential amino acids are not synthesised in the body, therefore have to be provided in the diet.
Explanation:
(c) Amino acids are the building blocks of proteins. Amino acid can be classified on the basis of characteristics of their side chains.
(a) Glycine is the simplest amino acid with lowest molecular weight. The side chain in glycine is represented by $\text{H}$ (Hydrogen) atom (not alkyl group). Due to 2-opposite $\text{H}$-atoms, this amino acid is symmetrical or achiral. All other amino acids are assymetrical or chiral, and can exist as D- and L-stereoisomers.
NCERT Page- 144 / N- 106
BIOMOLECULES(NCERT)
277940
Choose the mismatched pair
1 Glutamic acid-Acidic
2 Lysine-Basic
3 Valine - Charged
4 Phenylalanine-Aromatic
Explanation:
(c) Valine is a neutral essential amino acid which contains equal number of amino and carboxylic group.
NCERT Page-144/ N-106
BIOMOLECULES(NCERT)
277941
Which of the following is not an aromatic amino acid?
1 Thereonine
2 Tyrosine
3 Tryptophan
4 Phenylalanine
Explanation:
(a) Threonine is a hydroxy-amino acid and does not have benzene ring.
NCERT Page-144 / N-106
BIOMOLECULES(NCERT)
277942
Which of the following statement is incorrect about amino acid?
1 The amino group and carboxylic group of an amino acid are attached to both amino and carboxylic groups to alpha carbon.
2 Amino acids have an$\text{N}$-terminus, $\text{C}$-terminus, and $R$ groups.
3 Amino acid can be classified by the number of peptide bond.
4 Essential amino acids are not synthesised in the body, therefore have to be provided in the diet.
Explanation:
(c) Amino acids are the building blocks of proteins. Amino acid can be classified on the basis of characteristics of their side chains.
(a) Glycine is the simplest amino acid with lowest molecular weight. The side chain in glycine is represented by $\text{H}$ (Hydrogen) atom (not alkyl group). Due to 2-opposite $\text{H}$-atoms, this amino acid is symmetrical or achiral. All other amino acids are assymetrical or chiral, and can exist as D- and L-stereoisomers.
NCERT Page- 144 / N- 106
BIOMOLECULES(NCERT)
277940
Choose the mismatched pair
1 Glutamic acid-Acidic
2 Lysine-Basic
3 Valine - Charged
4 Phenylalanine-Aromatic
Explanation:
(c) Valine is a neutral essential amino acid which contains equal number of amino and carboxylic group.
NCERT Page-144/ N-106
BIOMOLECULES(NCERT)
277941
Which of the following is not an aromatic amino acid?
1 Thereonine
2 Tyrosine
3 Tryptophan
4 Phenylalanine
Explanation:
(a) Threonine is a hydroxy-amino acid and does not have benzene ring.
NCERT Page-144 / N-106
BIOMOLECULES(NCERT)
277942
Which of the following statement is incorrect about amino acid?
1 The amino group and carboxylic group of an amino acid are attached to both amino and carboxylic groups to alpha carbon.
2 Amino acids have an$\text{N}$-terminus, $\text{C}$-terminus, and $R$ groups.
3 Amino acid can be classified by the number of peptide bond.
4 Essential amino acids are not synthesised in the body, therefore have to be provided in the diet.
Explanation:
(c) Amino acids are the building blocks of proteins. Amino acid can be classified on the basis of characteristics of their side chains.
