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Q. No.Match the following:
Column I
Column II
(a)
Aquaporin
(i)
Amide
(b)
Asparagine
(ii)
Polysaccharide
(c)
Abscisic acid
(iii)
Polypeptide
(d)
Chitin
(iv)
Carotenoids
Options:
(a)
(b)
(c)
(d)
1.
(iii)
(i)
(iv)
(ii)
2.
(ii)
(iii)
(iv)
(i)
3.
(ii)
(i)
(iv)
(iii)
4.
(iii)
(i)
(ii)
(iv)
Subtopic: Proteins | Carbohydrates |
80%
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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Subtopic: Enzyme Cofactors |
84%
From NCERT
AIPMT - 2012
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The figure given below shows the conversions of a substrate into product by an enzyme. In which one of the four options (1-4), the components of the reaction labelled as A, B, C and D are identified correctly:
Options
| A | B | C | D | |
| 1. | Transition state |
Potential energy |
Activation energy without enzyme |
Activation energy with enzyme |
| 2. | Potential energy |
Transition state |
Activation energy with enzyme |
Activation energy without enzyme |
| 3. | Activation energy with enzyme |
Transition state |
Activation energy without enzyme |
Potential energy |
| 4. | Potential energy |
Transition state |
Activation energy without enzyme |
Activation energy with enzyme |
Subtopic: Enzyme Catalysis |
86%
From NCERT
AIPMT - 2010
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Identify the statement which is incorrect.
| 1. | Sulphur is an integral part of cysteine. |
| 2. | Glycine is an example of lipids. |
| 3. | Lecithin contains a phosphorus atom in its structure. |
| 4. | Tyrosine possesses an aromatic ring in its structure. |
Subtopic: Amino Acids | Lipids |
78%
From NCERT
NEET - 2020
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Which of the following is the simplest amino acid?
1. Alanine
2. Asparagine
3. Glycine
4. Tyrosine
Subtopic: Amino Acids |
89%
From NCERT
AIPMT - 2005
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Which of the following statements regarding enzyme inhibition is correct:
| 1. | Competitive inhibition is seen when a substrate competes with an enzyme for binding to an inhibitor protein |
| 2. | Non-competitive inhibitors often bind to the enzyme irreversibly |
| 3. | Competitive inhibition is seen when the substrate and the inhibitor compete for the active site on the enzyme |
| 4. | Non-competitive inhibition of an enzyme can be overcome by adding large amounts of substrate |
Subtopic: Enzyme Catalysis |
86%
From NCERT
AIPMT - 2005
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Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by -
1. Base-sugar-OH
2. Base-sugar-phosphate
3. Sugar-phosphate
4. (Base-sugar-phosphate)n
Subtopic: Nucleic Acid: Nucleotides |
74%
From NCERT
AIPMT - 2005
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Which protein is found in the maximum amount:
1. Catalase
2. Zinc carbonic anhydrase
3. Transferase
4. RUBISCO
Subtopic: Proteins |
95%
From NCERT
AIPMT - 1999
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Subtopic: Nucleic Acid: Nucleotides |
74%
From NCERT
AIPMT - 2000
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