8 public questions tagged with this topic.
In non-competitive inhibition, the inhibitor binds to a site other than the active site, altering the enzyme's function.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzyme Action and Factors Affecting Enzyme Activity
Competitive inhibitors compete with the substrate by binding to the active site. Non-competitive inhibitors bind elsewhere, and some inhibitors are reversible.
Ref: NCERT Class 11 Biology Chapter 9: Biomolecules Enzyme Action and Factors Affecting Enzyme Activity
Decreasing Vmax only is the scientifically accurate answer to this question. Within the study of Enzyme Kinetics, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of Decreasing Vmax only directly address what is being asked. Among the other options, Increasing Km only, Increasing Vmax and Km, and Decreasing Km only do not correctly answer this question because they either refer to different concepts, describe properties of other molecules or processes, or represent common misconceptions about this topic.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
A competitive inhibitor that targets bacterial metabolism is the accurate response regarding enzymatic activity or regulation described in this question. Enzymes are biological catalysts that accelerate reactions by lowering activation energy through specific substrate binding and transition state stabilization. In the context of Enzyme Inhibition, A competitive inhibitor that targets bacterial metabolism plays a specific catalytic or regulatory role determined by its active site configuration and mechanism of action. The other options (A non-competitive inhibitor of glycolysis, A suicide inhibitor of mammalian enzymes, and A reversible inhibitor of protein synthesis) are either different enzymes with distinct substrate specificities, act through different mechanisms, or are involved in separate metabolic pathways.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
Allosteric is the correct choice because it does not accurately describe or belong to the category addressed in this question. In the context of Enzyme Inhibition, the other options (Competitive, Uncompetitive, and Mixed) are all valid and well-established concepts. Allosteric is either unrelated to the topic, describes a different biological process, or represents a common misconception. Questions framed as 'which is NOT' require students to identify the exception among otherwise correct statements, demanding comprehensive knowledge of the topic rather than recognition of a single fact.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
It can be reversed by increasing substrate concentration is the correct choice because it does not accurately describe or belong to the category addressed in this question. In the context of Enzyme Inhibition, the other options (Km remains constant, Vmax decreases, and The inhibitor binds to both enzyme and enzyme-substrate complex) are all valid and well-established concepts. It can be reversed by increasing substrate concentration is either unrelated to the topic, describes a different biological process, or represents a common misconception. Questions framed as 'which is NOT' require students to identify the exception among otherwise correct statements, demanding comprehensive knowledge of the topic rather than recognition of a single fact.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
Physostigmine is the correct choice because it does not accurately describe or belong to the category addressed in this question. In the context of Enzyme Inhibition, the other options (Methotrexate, Sulfonamide, and Malonate) are all valid and well-established concepts. Physostigmine is either unrelated to the topic, describes a different biological process, or represents a common misconception. Questions framed as 'which is NOT' require students to identify the exception among otherwise correct statements, demanding comprehensive knowledge of the topic rather than recognition of a single fact.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
Inhibitor binds to both free enzyme and enzyme-substrate complex is the accurate response regarding enzymatic activity or regulation described in this question. Enzymes are biological catalysts that accelerate reactions by lowering activation energy through specific substrate binding and transition state stabilization. In the context of Enzyme Inhibition, Inhibitor binds to both free enzyme and enzyme-substrate complex plays a specific catalytic or regulatory role determined by its active site configuration and mechanism of action. The other options (Inhibitor binds only to the enzyme-substrate complex, Inhibitor and substrate compete for the same binding site, and Inhibitor binding increases enzyme activity) are either different enzymes with distinct substrate specificities, act through different mechanisms, or are involved in separate metabolic pathways.
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 6
