Question

Question

How does temperature affect enzyme activity in a chemical reaction?(1 point)
Responses which answer is correct and why

The rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.
The rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.

The rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low.
The rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low.

The rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase.
The rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase.

The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.
The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.
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Answer 1

The correct response is:

The rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.

Explanation: Enzymes, which are biological catalysts, typically exhibit increased activity with rising temperatures, up to a certain point. This is because higher temperatures provide more kinetic energy to the molecules involved in the reaction, leading to more frequent collisions and a higher reaction rate. However, if the temperature rises beyond an optimal level, enzymes can denature, losing their shape and functionality, which ultimately results in a decrease in reaction rate. Each enzyme has a specific temperature range in which it operates most efficiently, and exceeding this range can stop the reaction altogether.