What should be added to a nucleoside to yield a nucleotide?
1. Sugar
2. Phosphoric acid
3. Nitrogenous base
4. Sugar and nitrogenous base
Subtopic: Â Nucleic Acid: Nucleotides |
 90%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Study the following statements :
Select the option which includes all correct statements :
| a. | The substrate binds to the active site of the enzyme. |
| b. | Enzymes isolated form thermophilic organisms get denatured at 50o C. |
| c. | The active site of enzyme breaks the chemical bonds of the product. |
| d. | Prosthetic groups are tightly bound to the apoenzyme. |
| 1. | (a) & (c) | 2. | (c) & (d) |
| 3. | (b) & (c) | 4. | (a) & (d) |
Subtopic: Â Enzyme Cofactors |Â Mechanism of Enzymes |
 77%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Electron transferring enzymes belong to
1. Transferases
2. Oxidoreductases
3. Lyases
4. Isomerases
1. Transferases
2. Oxidoreductases
3. Lyases
4. Isomerases
Subtopic: Â Enzymes Classification |
 71%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Match the following and select the correct option:
1. i-a, ii-c, iii-d
2. i-a, ii-b, iii-c
3. i-b, ii-c, iii-d
4. i-c, ii-d, iii-a
| Column I | Column II | ||
| i. | Simple lipids | a. | Cholesterol |
| ii. | Compound lipids | b. | Vanaspati ghee |
| iii. | Sterols | c. | Glycerol |
| d. | Lecithin |
2. i-a, ii-b, iii-c
3. i-b, ii-c, iii-d
4. i-c, ii-d, iii-a
Subtopic: Â Lipids |
 83%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
The curve given below shows enzymatic activity with relation to change in conditions.
What do the axes (X and Y) represent?
What do the axes (X and Y) represent?
| X-axis | Y-axis | |
| 1. | Temperature | Enzymatic activity |
| 2. | Substrate concentration | Enzymatic activity |
| 3. | Enzymatic activity | Temperature |
| 4. | Enzymatic activity | pH |
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 65%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
Match the following and select the correct option.
1. i-q, ii-s, iii-r, iv-p
2. i-q, ii-p, iii-s, iv-r
3. i-p, ii-q, iii-r, iv-s
4. i-r, ii-s, iii-p, iv-q
| Column I | Column II | ||
| i. | Lipid | p. | Glutamic acid |
| ii. | Amino acid | q. | Glycerol |
| iii. | Protein | r. | Starch |
| iv. | Carbohydrate | s. | Collagen |
2. i-q, ii-p, iii-s, iv-r
3. i-p, ii-q, iii-r, iv-s
4. i-r, ii-s, iii-p, iv-q
Subtopic: Â Amino Acids |
 90%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Match the following lists:
1. i-a, ii-c, iii-b, iv-d
2. i-d, ii-a, iii-c, iv-b
3. i-c, ii-d, iii-a, iv-b
4. i-c, ii-b, iii-d, iv-a
| List I | List II | ||
| i. | Lyases | a. | Enzymes catalyzing hydrolysis of ester ether, peptide, glycosidic, \(C-C\), \(C-\)halide or \(P-N\) bonds |
| i. | Ligases | b. | Enzymes catalyzing a transfer of a group G between a pair of substrate \(S\) and \(S'\) |
| ii. | Hydrolases | c. | They catalyse removal of groups from substrate by mechanisms other than hydrolysis leaving double bonds. |
| iv. | Transferases | d. | They catalyse the linking together of 2 compounds |
2. i-d, ii-a, iii-c, iv-b
3. i-c, ii-d, iii-a, iv-b
4. i-c, ii-b, iii-d, iv-a
Subtopic: Â Enzymes Classification |
 75%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
The skeletal formula (showing numbering convention for substituent groups) of a simple aromatic ring shown below will be a part of the structure of all the following except:
| 1. | Thymine | 2. | Cytosine |
| 3. | Uracil | 4. | Adenine |
Subtopic: Â Nucleic Acid: Nucleotides |
 59%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
The nitrogenous bases of the two strands of DNA are joined by
1. Phosphodiester bond
2. Hydrogen bond
3. Glycosidic bond
4. Peptide bond
1. Phosphodiester bond
2. Hydrogen bond
3. Glycosidic bond
4. Peptide bond
Subtopic: Â Nucleic Acid |
 62%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
An example of protein with quaternary structure is
1. Myoglobin
2. Haemoglobin
3. Keratin
4. All of these
1. Myoglobin
2. Haemoglobin
3. Keratin
4. All of these
Subtopic: Â Proteins |
 78%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
© 2025 GoodEd Technologies Pvt. Ltd.