Given below are two statements:
Statement I:
Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity because proteins are denatured by heat.
Statement II:
When the inhibitor closely resembles the substrate in its molecular structure and inhibits the activity of the enzyme, it is known as competitive inhibitor
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is false but Statement II is true.
2. Both Statement I and Statement II are true.
3. Both Statement I and Statement II are false.
4. Statement I is true but Statement II is false.
Subtopic: Factors Affecting Enzyme Catalysis Reaction | Enzyme Inhibition |
86%
From NCERT
NEET - 2023
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Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
| Statement I: | A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid (N-terminal). |
| Statement II: | Adult human haemoglobin, consists of 4 subunits (two subunits of \(\alpha\) type and two subunits of ẞ type.) |
In the light of the above statements, choose the correct answer from the options given below:
| 1. | Statement I is false but Statement II is true. |
| 2. | Both Statement I and Statement II are true. |
| 3. | Both Statement I and Statement II are false. |
| 4. | Statement I is true but Statement II is false. |
Subtopic: Amino Acids | Proteins |
69%
From NCERT
NEET - 2023
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Subtopic: Carbohydrates: Cellulose, Chitin, Inulin & Agar |
82%
From NCERT
NEET - 2023
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Which of the following is not a secondary metabolite?
| 1. | Curcumin | 2. | Morphine |
| 3. | Anthocyanin | 4. | Lecithin |
Subtopic: Primary & Secondary Metabolites |
67%
From NCERT
NEET - 2023
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Match List - I with List - II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Terpenoids | (I) | Codeine |
| (B) | Unsaturated fatty acid | (II) | Diterpenes |
| (C) | Nucleic acid | (III) | Ricin |
| (D) | Polysaccharide | (IV) | Concanavalin A |
| Options: | (A) | (B) | (C) | (D) |
| 1. | II | IV | III | I |
| 2. | II | I | IV | III |
| 3. | II | III | I | IV |
| 4. | II | IV | I | III |
Subtopic: Primary & Secondary Metabolites |
NEET - 2023
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If the % weight of elements in Earth’s crust and human body are compared, all the following will have a higher % composition in human body except:
1. Carbon
2. Oxygen
3. Nitrogen
4. Calcium
1. Carbon
2. Oxygen
3. Nitrogen
4. Calcium
Subtopic: Introduction |
58%
From NCERT
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The nitrogenous base shown in the given figure is:
1. Adenine
2. Guanine
3. Cytosine
4. Thymine
1. Adenine
2. Guanine
3. Cytosine
4. Thymine
Subtopic: Element Analysis |
87%
From NCERT
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The use of sulpha drugs used to slow down the growth of bacterial colonies is based on the principle of:
1. antigen-antibody interaction
2. competitive inhibition
3. allosteric feedback inhibition
4. mutagenesis
1. antigen-antibody interaction
2. competitive inhibition
3. allosteric feedback inhibition
4. mutagenesis
Subtopic: Enzyme Inhibition |
82%
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The number of types of units present in the structure of adult human hemoglobin is:
1. 1
2. 2
3. 3
4. 4
1. 1
2. 2
3. 3
4. 4
Subtopic: Introduction to Proteins |
50%
From NCERT
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Secondary metabolites | Class | ||
| A | Vinblastin | P | Polymeric substances |
| B | Concanavalin A | Q | Drugs |
| C | Rubber | R | Toxins |
| D | Ricin | S | Lectins |
Codes:
| A | B | C | D | |
| 1. | R | S | P | Q |
| 2. | Q | S | P | R |
| 3. | Q | P | R | S |
| 4. | P | Q | R | S |
Subtopic: Primary & Secondary Metabolites |
88%
From NCERT
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