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Questions and Answers
Which factor affects the activity of enzymes?
Which factor affects the activity of enzymes?
Which factor affects the velocity of an enzymatic process?
Which factor affects the velocity of an enzymatic process?
What is the unit of measurement for reaction velocity?
What is the unit of measurement for reaction velocity?
What can happen if substrate concentration continues to increase beyond a certain point?
What can happen if substrate concentration continues to increase beyond a certain point?
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What happens to the velocity of an enzymatic reaction as substrate concentration increases?
What happens to the velocity of an enzymatic reaction as substrate concentration increases?
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Study Notes
Factors Affecting Enzyme Activity
- Temperature: Enzymes have an optimum temperature. Extreme temperatures can denature enzymes, altering their structure and reducing activity.
- pH Level: Each enzyme has an optimal pH range; deviations can lead to decreased activity or denaturation.
- Substrate Concentration: An increase in substrate concentration initially boosts reaction rates until a saturation point is reached.
Factors Affecting Enzymatic Velocity
- Enzyme Concentration: Higher concentrations of enzymes can increase reaction velocity, assuming substrate availability.
- Inhibitors: Competitive and non-competitive inhibitors can decrease the velocity of enzyme reactions by interfering with substrate binding or altering enzyme function.
Measurement of Reaction Velocity
- The unit of measurement for reaction velocity is typically expressed as moles of substrate converted per unit time (e.g., mol/s).
Impact of Increasing Substrate Concentration
- Beyond a certain point, continuous increases in substrate concentration can lead to saturation, where all active sites of the enzyme are occupied, and the reaction rate levels off.
Relationship between Substrate Concentration and Enzymatic Velocity
- As substrate concentration increases, the velocity of an enzymatic reaction also increases, following a hyperbolic pattern until reaching maximum velocity (Vmax) at saturation.
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Description
Test your knowledge on factors that affect enzymatic activity in this General Biology 1 quiz for Grade 11 students. Explore the impact of velocity, concentration, temperature, pH, and enzyme inhibitors.
