The vitamin Niacin functions as a coenzyme in:

1. Nucleoprotein synthesis

2. Hydrogen transport

3. Fatty acid synthesis

4. RBC production

Subtopic:  Enzyme Cofactors |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The six most common atoms in organic molecules are:

1. Carbon, Hydrogen, Oxygen, Helium, Calcium and Sulphur
2. Carbon, Hydrogen, Oxygen, Calcium, Magnesium and Sulphur
3. Carbon, Oxygen, Nitrogen, Sulphur, Phosphorous and Magnesium
4. Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorous and Sulphur
Subtopic:  Introduction |
 76%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The unique properties of each amino acid are determined by its particular:

1. R group

2. Amino group

3. Kinds of peptide bonds

4. Number of bonds to other amino acids 

Subtopic:  Introduction to Proteins |
 88%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Based on the graph of an enzyme-catalyzed reaction, which of the following could be used to increase the reaction rate beyond point C?

1. increase the amount of substrate

2. add more water

3. increase the temperature

4. decrease enzyme concentration

Subtopic:  Properties of Enzymes |
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Given below is the graph showing the effect of substrate concentration on enzyme activity. In the presence of a competitive inhibitor, when the concentration of the substrate is progressively increased:

 

1. The Km value increases but the reaction will not achieve Vmax
2. The Km value increases but the reaction can ultimately achieve  Vmax
3. The Km value decreases but the reaction will not achieve Vmax
4. The Km value decreases but the reaction can ultimately achieve  Vmax
Subtopic:  Enzyme Inhibition |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Study the primary structure of a part of a hypothetical protein and choose the correct statements:

 

I. 1 is Serine

II. 2 is sulfur containing amino acid and can be methionine

III. 3 is aromatic amino acid and can by tyrosine

IV. 4 is an acidic amino acid

1. I, II and III only

2. I, III and IV only

3. II, III and IV only

4. I, II, III and IV

Subtopic:  Proteins |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following biomolecules does 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:  Double Helix : Watson & Crick Part 1 | Double Helix : Watson & Crick |
 69%
From NCERT
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The chitinous exoskeleton of arthopods is formed by the polymerisation of 

(1) keratin sulphate and chondroitin sulphate

(2) D-glucosamine

(3) N-acetyl glucosamine

(4) lipoglycans

Subtopic:  Carbohydrates: Cellulose, Chitin, Inulin & Agar |
 83%
NEET - 2015
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which one of the following statements is correct, with reference to enzymes?

(1) Apoenzyme = Holoenzyme + Coenzyme

(2) Holoenzyme = Apoenzyme + Coenzyme

(3) Coenzyme = Apoenzyme + Holoenzyme

(4) Holoenzyme = Coenzyme + Cofactor

Subtopic:  Enzyme Cofactors |
 70%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following is not a polymeric substance?

(1) Nucleic acid               

(2) Proteins

(3) Polysaccharides           

(4) Lipids

Subtopic:  Introduction |
 77%
From NCERT
NEET - 2017
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh