Question

How does temperature affect enzyme activity in a chemical reaction?(1 point)%0D%0AResponses%0D%0A%0D%0AThe rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase.%0D%0AThe rate of a chemical reaction initially increases with increasing temperature and continues to increase indefinitely as temperature continues to increase.%0D%0A%0D%0AThe rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.%0D%0AThe rate of a chemical reaction initially increases with increasing temperature and then decreases, eventually stopping, when the temperature gets too high.%0D%0A%0D%0AThe rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.%0D%0AThe rate of a chemical reaction always decreases with increasing temperature and always increases with decreasing temperature.%0D%0A%0D%0AThe rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low.%0D%0AThe rate of a chemical reaction initially increases with decreasing temperature and then decreases, eventually stopping, when the temperature gets too low.

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.

This is because enzymes, which are biological catalysts, have an optimal temperature range where their activity is maximized. As temperature rises, enzyme activity typically increases due to more kinetic energy leading to more collisions between enzymes and substrates. However, if the temperature exceeds a certain threshold, the enzyme can denature (lose its structure), resulting in a decrease in activity and eventually stopping the reaction.