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Q. No.
The correct structure of the dipeptide glycyl valine is: 
 
1. 2.
3. 4.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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What is the one-letter code for the amino acid Tyrosine?
1. F  2. T 
3. Y  4. P 
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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Which naturally occurring amino acid contains only one basic functional group?
1. Arginine 2. Lysine
3. Histidine 4. Isoleucine
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 3: 35%-60%
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Which of the following is not a correct statement?

1. α-carbon of α-amino acid is asymmetric except for glycine.
2. All proteins of the human body are found in L-form.
3. The human body can synthesize all the proteins it needs.
4. At pH = 7, both amino and carboxylic groups exist in ionized form.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 4: Below 35%
AIPMT - 2002
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The number of peptide bonds in the compound given below is:

 

1.  1

2.  2

3.  3

4.  4

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
Level 4: Below 35%
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The structural feature that distinguishes proline from other natural α-amino acids is:
1. It is optically inactive.

2. It contains an aromatic group.

3. It is a dicarboxylic acid.

4. It is a secondary amine.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 55%
Level 3: 35%-60%
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How many chiral center(s) is/are present in threonine?

1. Zero 2. One
3. Two 4. Three
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 54%
Level 3: 35%-60%
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The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct?
1. D is the acidic amino acid - glutamic acid
2. C is an aromatic amino acid - tryptophan
3. A is the C-terminal amino acid and D is N terminal amino acid
4. A is the sulphur containing amino acid-methionine
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 56%
Level 3: 35%-60%
NEET - 2013
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