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Q. No.Subtopic: Enzymes |
78%
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
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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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 |
71%
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 |
84%
From NCERT
AIPMT - 2013
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Subtopic: Primary & Secondary Metabolites |
75%
From NCERT
NEET - 2019
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Consider the following statements:
| A: | A coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group |
| B: | A complete catalytic enzyme with its bound prosthetic group is called apoenzyme |
Select the correct option
1. (A) is false but (B) is true
2. Both (A) and (B) are true
3. (A) is true but (B) is false
4. Both (A) and (B) are false
Subtopic: Enzyme Cofactors |
From NCERT
NEET - 2019
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Match the following:
| (a) | Inhibitor of catalytic activity of succinate dehydrogenase | (i) | Ricin |
| (b) | Possess peptide bonds | (ii) | Malonate |
| (c) | Cell wall material in fungi | (iii) | Chitin |
| (d) | Secondary metabolite | (iv) | Collagen |
Choose the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iv) | (iii) | (i) |
Subtopic: Proteins | Enzyme Inhibition | Primary & Secondary Metabolites | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
89%
From NCERT
NEET - 2020
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Which one of the following biomolecules is correctly characterised?
| 1. | Palmitic acid - an unsaturated fatty acid with 18 carbon atoms |
| 2. | Adenylic acid - adenosine with a glucose phosphate molecule |
| 3. | Alanine amino acid - Contains an amino group and an acidic group anywhere in the molecule |
| 4. | Lecithin - a phosphorylated glyceride found in the cell membrane |
Subtopic: Lipids |
74%
From NCERT
AIPMT - 2012
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