Topic: Enzymes: types, properties, action, classification· Cell Structure and Function

Which of the following describes the given graph correctly?

Potential energy vs reaction progress graph with two curves, A (lower hump) and B (higher hump), substrate to product

1. Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme

2. Endothermic reaction with energy A in absence of enzyme and B in presence of enzyme

3. Exothermic reaction with energy A in absence of enzyme and B in presence of enzyme

4. Endothermic reaction with energy A in presence of enzyme and B in absence of enzyme

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Answer: 1. Exothermic reaction with energy A in presence of enzyme and B in absence of enzyme

The graph shows energy released, and the arrows A and B show activation energies of two paths.

The products lie lower than the substrate level, so the reaction is exothermic. An enzyme lowers the activation energy, so the lower hump A is the path with enzyme and the higher hump B is the path without enzyme. This gives option 1.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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Which of the following describes the given graph correctly?

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