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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NEET 2023 - Target Batch - Aryan Raj Singh
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Macro molecule chitin is:

1. Phosphorus containing saccharide

2. Sulphur containing polysaccharide

3. Simple polysaccharide

4. Nitrogen-containing polysaccharide

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 79%
AIPMT - 2013
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Hints
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Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown and the one blank component X in it:
     

1. Category: Cholesterol; Component: Guanine
2. Category: Amino acid; Component: NH2
3. Category: Nucleotide; Component: Adenine
4. Category: Nucleoside; Component: Uracil
Subtopic:  Nucleic Acid: Nucleotides | Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 70%
From NCERT
AIPMT - 2012
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Which one is the most abundant protein in the animal world?
1. Trypsin
2. Haemoglobin
3. Collagen
4. Insulin

Subtopic:  Proteins |
 97%
From NCERT
AIPMT - 2012
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Which one out of A-D given below correctly represents the structural formula of the basic amino acid?

A B
C D

1. C 2. D
3. A 4. B
Subtopic:  Different Amino Acids | Introduction to Proteins |
 64%
AIPMT - 2012
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which one of the following structural formulae of two organic compounds are correctly identified along with its related function? 


 

1. A- Triglyceride – a major source of energy
2. B- Uracil – a component of DNA
3. A- Lecithin – a component of cell membrane
4. B- Adenine – a nucleotide that makes up nucleic acids

Subtopic:  Lipids |
 75%
From NCERT
AIPMT - 2011
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The curve given below shows enzymatic activity with relation to three conditions (pH, temperature and substrate concentration) what do the two axis (X and Y) represent? 

        
   

X-axis

Y-axis

(a)

Temperature

Enzyme activity

(b)

Substrate concentration

Enzyme activity

(c)

Enzyme activity

Temperature

(d)

Enzyme activity

pH

1.  (a)
2.  (b)
3.  (c)
4.  (d)

Subtopic:  Properties of Enzymes |
 72%
From NCERT
AIPMT - 2011
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Cellulose is the major component of cell walls of:

1. pythium

2. Xanthomonas

3. Pseudomonas

4. Saccharomyces

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
AIPMT - 2008
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Carbohydrates are commonly found as starch in plant storage organs. Which of the following five properties of starch (A-E) make it useful as a storage material?
 
(A) Easily translocated
(B) Chemically non-reactive
(C) Easily digested by animals
(D) Osmotically inactive
(E) Synthesized during photosynthesis

The useful properties are:

1. (B) and (C)

2. (B) and (D)

3. (A), (C), and (E)

4. (A) and (E)

Subtopic:  Carbohydrates: Starch & Glycogen |
 60%
AIPMT - 2008
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A competitive inhibitor of succinic dehydrogenase is:

1.malonate2.oxaloacetate
3.α-ketoglutarate4.malate
Subtopic:  Enzyme Inhibition: Introduction | Enzyme Inhibition |
 91%
From NCERT
AIPMT - 2008
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