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Q. No.

Which of the following is a basic amino acid?

1. Alanine

2. Tyrosine

3. Lysine

4. Serine 

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 86%
Level 1: 80%+
NEET - 2020
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The non-essential amino acid among the following is:

1. Lysine 2. Valine
3. Leucine 4. Alanine
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 68%
Level 2: 60%+
NEET - 2019
Hints

Which structure(s) of proteins remains(s) intact during denaturation process?

1. Both secondary and tertiary structures

2. Primary structure only

3. Secondary structure only

4. Tertiary structure only

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 83%
Level 1: 80%+
NEET - 2019
Hints
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The difference between amylose and amylopectin is: 

1. Amylopectin has 1→4  α - linkage and 1→6 α-linkage.
2. Amylose has 1→4 α-linkage and 1 → 6 β-linkage.
3. Amylopectin has  1 → 4 α-linkage and 1 → 6 β-linkage.
4. Amylose is made up of glucose and galactose.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 62%
Level 2: 60%+
NEET - 2018
Hints
A compound that can form a zwitterion is -
1. Aniline 2. Acetanilide
3. Benzoic acid 4. Glycine
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 74%
Level 2: 60%+
NEET - 2018
Hints

In humans, the main oxygen carrier in the blood is -

1. Hemocyanin

2. Proteins

3. Haemoglobin

4. Both microorganisms and haemoglobin.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 87%
Level 1: 80%+
NEET - 2017
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Which of the following statements is not correct?

1. Ovalbumin is a simple food reserve in egg white.
2. Blood proteins thrombin and fibrinogen are involved in blood clotting.
3. Denaturation makes the proteins more active.
4. Insulin maintains sugar level in the blood of the human body.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 86%
Level 1: 80%+
NEET - 2017
Hints
Amino acids are linked together in protein by:
1. β -glycosidic bond 2. Peptide bond
3. Dative bond 4. α -glycosidic bond
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 93%
Level 1: 80%+
NEET - 2016
Hints

The structure that represents the peptide chain is:

1.
2.
3.
4.
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 63%
Level 2: 60%+
AIPMT - 2004
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The helical structure of a protein is stabilized by:

1. Hydrogen bonds 2. Ether bonds
3. Peptide bonds 4. Dipeptide bonds 
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 82%
Level 1: 80%+
AIPMT - 2004
Hints
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