Consider the given statements regarding some important secondary metabolites:
I. Morphine is a strong opiate that is found naturally in opium and is mainly used as a pain medication.
II. Ricin is a toxin and a highly potent toxin produced in the seeds of the castor oil plant.
III. Concanavalin A is a lectin and is widely used in biology and biochemistry to characterize glycoproteins and other sugar-containing entities on the surface of various cells.
IV. Vinblastin is an anti-cancer drug typically used with other medications, to treat a number of types of cancer.
1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
Subtopic: Primary & Secondary Metabolites |
80%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
The given figure represents structure of glycogen/amylopectin. Identify A, B, C and D:
| A | B | C | D | |
| 1. | Reducing end | Non reducing end | α [1→4] linkage | α [1→6] linkage |
| 2. | Non reducing end | Reducing end | α [1→4] linkage | α [1→6] linkage |
| 3. | Reducing end | Non reducing end | α [1→6] linkage | α [1→4] linkage |
| 4. | Non reducing end | Reducing end | α [1→6] linkage | α [1→4] linkage |
Subtopic: Carbohydrates | Carbohydrates: Glycosidic Bond & Disaccharide | Carbohydrates: Starch & Glycogen |
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
What level of protein structure is shown in the given diagram?
| 1. Primary | 2. Secondary |
| 3. Tertiary | 4. Quaternary |
Subtopic: Proteins |
65%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Which of the following categories of enzyme classification are correctly matched?
| EC 1 | Oxidoreductases: catalyze oxidation/reduction reactions |
| EC 2 | Hydrolases: catalyze the hydrolysis of various bonds |
| EC 3 | Transferases: transfer a functional group (e.g. a methyl or phosphate group) |
| EC 4 | Lyases: cleave various bonds by means other than hydrolysis and oxidation |
| EC 5 | Isomerases: catalyze isomerization changes within a single molecule |
| EC 6 | Ligases: join two molecules with covalent bonds. |
1. EC 1, EC 4, EC 5 and EC 6 only
2. EC 2 and EC 3 only
3. EC 1, EC 4 and EC 6 only
4. EC 3, EC 4, EC 5 and EC 6 only
Subtopic: Enzymes Classification |
61%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
Enzymes A, B and C in the given figure can be:
| A | B | C | |
| 1. | Gastric lipase | Salivary amylase | Lingual lipase |
| 2. | Pepsin | Salivary amylase | Trypsin |
| 3. | Pepsin | Trypsin | Lactase |
| 4. | Rennin | Maltase | Sucrase |
Subtopic: Factors Affecting Enzyme Catalysis Reaction |
72%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
In the given diagram of DNA double helix, what would be the correct values of 1, 2, and 3 in nanometre?
| 1 | 2 | 3 | |
| 1. | 1.0 | 3.4 | 34 |
| 2. | 2.0 | 0.34 | 3.4 |
| 3. | 2.0 | 3.4 | 0.34 |
| 4. | 4.0 | 3.4 | 0.34 |
Subtopic: The DNA |
75%
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
Given below is a schematic diagram of a metabolic pathway in living organisms. Please do not try to decipher anything from the given diagram. Can you tell what will be true for metabolic pathways in living organisms in general?
I. Biomolecules in a living organism have a turn over.
II. Metabolic pathways cross-cross each other.
III. Flow of metabolites through metabolic pathways has a definite rate and direction.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
I. Biomolecules in a living organism have a turn over.
II. Metabolic pathways cross-cross each other.
III. Flow of metabolites through metabolic pathways has a definite rate and direction.
1. Only I and II
2. Only I and III
3. Only II and III
4. I, II and III
Subtopic: DYNAMIC STATE OF BODY CONSTITUENTS – CONCEPT OF METABOLISM (OLD NCERT) | METABOLIC BASIS FOR LIVING (OLD NCERT) |
70%
Please attempt this question first.
Hints
Identify the correct statement regarding the figure given:
1. A is an ester bond; B is a glycosidic bond and they are type of hydrogen bonds
2. A is an ester bond; B is a glycosidic bond and they are formed by dehydration synthesis
3. A is a peptide bond; B is a glycosidic bond and they are types of hydrogen bonds
4. A is a peptide bond; B is an ester bond and they are formed by dehydration synthesis
1. A is an ester bond; B is a glycosidic bond and they are type of hydrogen bonds
2. A is an ester bond; B is a glycosidic bond and they are formed by dehydration synthesis
3. A is a peptide bond; B is a glycosidic bond and they are types of hydrogen bonds
4. A is a peptide bond; B is an ester bond and they are formed by dehydration synthesis
Subtopic: The DNA |
72%
Please attempt this question first.
Hints
In the enzyme which catalyses the breakdown of:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
\(\mathrm{H}_2 \mathrm{O}_2 \rightarrow \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2\)
the prosthetic group is:
| 1. | Nicotinamide adenine dinucleotide | 2. | Haem |
| 3. | Zinc | 4. | Niacin |
Subtopic: Enzyme Cofactors |
62%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Arrange the following elements present in human body in their ascending order of occurrence [begin with the element found in the lowest percentage]:
1. Carbon, Oxygen, Nitrogen, Calcium, Hydrogen
2. Calcium, Hydrogen, Nitrogen, Oxygen, Carbon
3. Hydrogen, Calcium, Nitrogen, Oxygen, Carbon
4. Hydrogen, Calcium, Nitrogen, Carbon, Oxygen
| Hydrogen, Carbon, Oxygen, Nitrogen, Calcium |
2. Calcium, Hydrogen, Nitrogen, Oxygen, Carbon
3. Hydrogen, Calcium, Nitrogen, Oxygen, Carbon
4. Hydrogen, Calcium, Nitrogen, Carbon, Oxygen
Subtopic: Element Analysis |
68%
From NCERT
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Hints
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