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 |
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The central dogma of molecular genetics states that the genetic information flows from

1.  amino acid - proteins - DNA

2.  DNA - carbohydrates - proteins

3.  DNA - RNA - proteins

4.  DNA - RNA - Carbohydrates

Subtopic:   DNA, RNA & Metal Ions |
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The correct corresponding order of names of four aldoses with configuration given below respectively, is

 

1.  L-erythrose, L-threose, L-erythrose, D-threose

2.  D-threose, D-erythrose, L-threose, L-erythrose

3.  L-erythrose, L-threose, D-erythrose, D-threose

4.  D-erythrose, D-threose, L-erythrose, L-threose

Subtopic:  Carbohydrates - Classification & D-L configuration |
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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 a human body.

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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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 |
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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 |
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The correct statement regarding RNA and DNA, respectively is
1. The sugar component in RNA is ribose and the sugar component in DNA is 2'-deoxyribose
2. The sugar component in RNA is arabinose and the sugar component in DNA is ribose
3. The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose
4. The sugar component in RNA is arabinose and the sugar component in DNA is 2’-deoxyribose
Subtopic:   DNA, RNA & Metal Ions |
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A non-reducing sugar among the following is -
1. Lactose
2. Glucose
3. Sucrose
4. Maltose

Subtopic:  Carbohydrates - Classification & D-L configuration |
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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 |
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Which one of the following compounds show the presence of intramolecular hydrogen bond?

1.  H2O2

2.  HCN

3.  Cellulose

4.  Concentrated acetic acid

Subtopic:  Polysaccharides & their Importance |
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