Which of the following are not polymeric?

1. Proteins  2. Polysaccharides
3. Lipids 4. Nucleic acids

Subtopic:  Lipids: Fatty Acids |
 77%
From NCERT
NEET - 2017
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A non-proteinaceous enzyme is:

1. lysozyme

2. ribozyme

3. ligase

4. deoxyribonuclease

Subtopic:  Enzymes |
 76%
From NCERT
NEET - 2016
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The two functional groups characteristic of sugars are:

1. Hydroxyl and methyl 2. Carbonyl and methyl
3. Carbonyl and phosphate 4. Carbonyl and hydroxyl
Subtopic:  Carbohydrates: Introduction |
 64%
NEET - 2018
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Which of the following describes the given graph correctly? 
 
1. Endothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme
2. Exothermic reaction with energy A in the presence of enzyme and B in the absence of enzyme
3. Endothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme
4. Exothermic reaction with energy A in the absence of enzyme and B in the presence of enzyme
Subtopic:  Mechanism of Enzymes |
 81%
From NCERT
NEET - 2016
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Which one of the following statements is incorrect?
1. Cellulose is a polysaccharide
2. Uracil is a pyrimidine
3. Glycine is a sulphur-containing amino acid
4. Sucrose is a disaccharide
Subtopic:  Different Amino Acids |
 85%
From NCERT
NEET - 2016
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Which of the following biomolecules have a phosphodiester bond?

1. Fatty acids in a diglyceride

2. Monosaccharides in a polysaccharide

3. Amino acids in a polypeptide

4. Nucleic acids in a nucleotide

Subtopic:  Nucleic Acid |
 79%
From NCERT
NEET - 2015
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A phosphoglyceride is always made up of:
1. only an unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
2. a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
3. a saturated or unsaturated fatty acid esterified to a phosphate group which is also attached to a glycerol molecule.
4. only a saturated fatty acid is esterified to a glycerol molecule to which a phosphate group is also attached.
Subtopic:  Lipids: Glycerolipids, Phospholipids & Glycerol |
 64%
From NCERT
AIPMT - 2013
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Select the option which is not correct with respect to enzyme action:
 

1. Substrate binds with the enzyme at its active site.
2. Addition of a lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate
3. A non-competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate 
4. Malonate is a competitive inhibitor of succinic dehydrogenase

Subtopic:  Enzyme Inhibition: Introduction |
 74%
From NCERT
AIPMT - 2014
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The essential chemical components of many coenzymes are:
1. Nucleic acid
2. Carbohydrates
3. Vitamins
4. Proteins

Subtopic:  Enzyme Cofactors |
 70%
From NCERT
AIPMT - 2013
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Transition state structure of the substrate formed during an enzymatic reaction is:
1. permanent but unstable
2. transient and unstable
3. permanent and stable
4. transient but stable

Subtopic:  Mechanism of Enzymes |
 83%
From NCERT
AIPMT - 2013
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