Select the option which is not correct with respect to enzyme action:
- Addition of lot of succinate does not reverse the inhibition of succinic dehydrogenase by malonate
- A non-competitive inhibitor binds the enzyme at a site distinct from that which binds the substrate
Malonate is a competitive inhibitor of succinic dehydrogenase
Substrate binds with enzyme at its active site
The Correct Option is A
Solution and Explanation
Top NEET Biology Questions
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Biology
- Ecosystems
- Name the class of enzyme that usually catalyzes the following reaction: \[ S - G + S^{\prime} \rightarrow S + S^{\prime} - G \] Where \( G \) represents a group other than hydrogen, \( S \) is a substrate, and \( S^{\prime} \) is another substrate.
- Given below are two statements: Statement I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.
Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repair mechanisms. In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Biology
- Structure of DNA and RNA
- Match List - I with List II
List I List II A. The Evil Quartet III. Causes of biodiversity losses B. Ex situ conservation I. Cryopreservation C. Lantana camara II. Alien species invasion D. Dodo IV. Extinction - Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase- NEET (UG) - 2025
- Biology
- Molecular Biology
Top NEET Enzymes Questions
- Name the class of enzyme that usually catalyzes the following reaction: \[ S - G + S^{\prime} \rightarrow S + S^{\prime} - G \] Where \( G \) represents a group other than hydrogen, \( S \) is a substrate, and \( S^{\prime} \) is another substrate.
- The protein portion of an enzyme is called:
- Match List I with List II
List I List II A α –I antitrypsin I Cotton bollworm B Cry IAb II ADA deficiency C Cry IAc III Emphysema D Enzyme replacement therapy IV Corn borer
Choose the correct answer from the options given below: - Match List I with List II:Choose the correct answer from the options given below:
List I List II A GLUT-4 I Hormone B Insulin II Enzyme C Trypsin III Intercellular ground substance D Collagen IV Enables glucose transport into cells - Inhibition of Succinic dehydrogonase enzyme by malonate is a classical example of:
Top NEET Questions
Given below are two statements:
Statement I: The primary source of energy in an ecosystem is solar energy.
Statement II: The rate of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).
In light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Ecosystems
- Given below are two statements:
Statement I: A hypothetical diatomic molecule with bond order zero is quite stable.
Statement II: As bond order increases, the bond length increases.
In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Chemical bonding and molecular structure
Identify the correct orders against the property mentioned:
A. H$_2$O $>$ NH$_3$ $>$ CHCl$_3$ - dipole moment
B. XeF$_4$ $>$ XeO$_3$ $>$ XeF$_2$ - number of lone pairs on central atom
C. O–H $>$ C–H $>$ N–O - bond length
D. N$_2$>O$_2$>H$_2$ - bond enthalpy
Choose the correct answer from the options given below:- NEET (UG) - 2025
- Chemical bonding and molecular structure
- A microscope has an objective of focal length \(f_o = 2\) cm and an eyepiece of focal length \(f_e = 4\) cm. The tube length of the microscope is \(L = 40\) cm. If the distance of distinct vision of eye is \(D = 25\) cm, the magnification in the microscope is:
- NEET (UG) - 2025
- Optical Instruments
- Given below are two statements: Statement I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.
Statement II: DNA evolved from RNA and is a more stable genetic material. Its double helical strands being complementary, resist changes by evolving repair mechanisms. In the light of the above statements, choose the most appropriate answer from the options given below:- NEET (UG) - 2025
- Structure of DNA and RNA