An enzyme catalysed reaction is running optimally at 40oC. If the temperature is reduced to 20oC, the rate of reaction is expected to:
| 1. | Double | 2. | Half |
| 3. | Increase four time | 4. | Reduce to a quarter |
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 50%
Please attempt this question first.
Hints
All enzymes are:
1. Proteins
2. Thermostable
3. Capable of speeding up a biochemical reaction
4. Capable of working in alkaline pH
1. Proteins
2. Thermostable
3. Capable of speeding up a biochemical reaction
4. Capable of working in alkaline pH
Subtopic: Â Enzymes |Â Factors Affecting Enzyme Catalysis Reaction |
 59%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Regarding factors affecting enzyme activity:
| I: | Low temperature preserves the enzyme in a temporarily inactive state whereas high temperature destroys enzymatic activity. |
| II: | With the increase in substrate concentration, the velocity of the enzymatic reaction rises at first. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 86%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following combination of factors affects enzyme activity?
A. Salinity & pH
B. Temperature
C. Concentration of substrate
D. Temperature & pH
E. pH
Choose the correct answer from the options given below:
1. A only
2. B only
3. C & D only
4. A & B only
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
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: Â Factors Affecting Enzyme Catalysis Reaction |
 72%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Read the given statements A, B and C and select the correct option.
1. Statements (A) and (B) are correct
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
| (A) | All enzymes are proteinaceous in nature. |
| (B) | Some competitive inhibitors are often used in the control of bacterial pathogens. |
| (C) | Active site of an enzyme is formed by the folding of the backbone of tertiary structure of protein upon itself. |
2. Statements (B) and (C) are correct
3. Statements (A) and (C) are correct
4. Statements (A), (B) and (C) are correct
Subtopic: Â Proteins |Â Enzymes |Â Factors Affecting Enzyme Catalysis Reaction |Â Properties of Enzymes |
 57%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Given below are two statements:
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.
| 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 |
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: Â Factors Affecting Enzyme Catalysis Reaction |Â Enzyme Inhibition |
 86%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.
The number of correct statements from the given statements is:
I: Almost all enzymes are proteins.
II: Some nucleic acids can behave like enzymes.
III: No enzyme in living organisms can function above 400C.
IV: Enzymes are the reason that chemicals react with each other.
V: Enzymes are not sensitive to pH in their environment.
1. 2
2. 3
3. 4
4. 5
I: Almost all enzymes are proteins.
II: Some nucleic acids can behave like enzymes.
III: No enzyme in living organisms can function above 400C.
IV: Enzymes are the reason that chemicals react with each other.
V: Enzymes are not sensitive to pH in their environment.
1. 2
2. 3
3. 4
4. 5
Subtopic: Â Enzymes |Â Enzyme Catalysis |Â Factors Affecting Enzyme Catalysis Reaction |
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Which of the following is not an example of competitive inhibition?
1. Inhibition of succinic dehydrogenase by malonate
2. Sulpha drugs used to control bacterial pathrogens
3. Inhibition of alcohol dehydrogenase by ethanol in methanol poisoning
4. Inhibition of cytochrome oxidase by cyanide
1. Inhibition of succinic dehydrogenase by malonate
2. Sulpha drugs used to control bacterial pathrogens
3. Inhibition of alcohol dehydrogenase by ethanol in methanol poisoning
4. Inhibition of cytochrome oxidase by cyanide
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 53%
Please attempt this question first.
Hints
Which of the following factors can influence enzyme activity?
1. High temperature
2. pH
3. Substrate concentration
4. All of these
1. High temperature
2. pH
3. Substrate concentration
4. All of these
Subtopic: Â Factors Affecting Enzyme Catalysis Reaction |
 94%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
© 2024 GoodEd Technologies Pvt. Ltd.