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Factors Affecting Enzyme Activity Video Lecture | Biology for ACT
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FAQs on Factors Affecting Enzyme Activity Video Lecture - Biology for ACT
| 1. What are enzymes and why are they important in biological systems? |  |
Enzymes are protein molecules that act as catalysts in biological systems. They speed up chemical reactions by lowering the activation energy required for the reaction to occur. Enzymes are essential for many biological processes such as metabolism, digestion, and DNA replication.
| 2. How do enzymes function? | |
Enzymes function by binding to specific molecules called substrates and converting them into products. The active site of the enzyme binds to the substrate, forming an enzyme-substrate complex. This complex undergoes a series of chemical reactions, leading to the conversion of the substrate into the product. The enzyme is then released and can be reused for further reactions.
| 3. What factors can affect enzyme activity? | |
Several factors can affect enzyme activity, including temperature, pH, substrate concentration, enzyme concentration, and the presence of inhibitors or activators. Changes in these factors can alter the shape and function of the enzyme, either enhancing or inhibiting its activity.
| 4. How does temperature affect enzyme activity? | |
Temperature can significantly impact enzyme activity. As temperature increases, the rate of enzyme activity generally increases due to faster molecular movement and increased collision frequency between the enzyme and substrate. However, excessive heat can denature the enzyme, disrupting its structure and rendering it non-functional.
| 5. How does pH affect enzyme activity? | |
pH plays a crucial role in enzyme activity. Each enzyme has an optimal pH range at which it functions most effectively. Deviations from this optimal pH can lead to denaturation of the enzyme, affecting its shape and ability to bind to the substrate. Acidic or alkaline conditions can disrupt the ionic and hydrogen bonds within the enzyme, reducing its catalytic activity.
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Nov 15, 2024 Last updated |
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