Effect of Temperature on Enzymes

Q. What happens to any chemical reaction when the temperature is increased?

1. Its rate decreases
2. Its rate increases
3. It stops
4. It goes at a slower rate

Q.

The temperature at which there is a maximum activity of the enzymes in humans is ${37}^{\circ }C$. The most plausible reason for this is

1. It is the physiological temperature and is optimum for the activity of enzymes in the human body

2. Higher temperatures can denature the proteins

3. The activity is maximum at 37 degrees for all enzymes

4. The optimum temperature varies for every enzyme.

Q.

Regarding the graph, assertion and reason; choose the correct option, where X Axis is Temperature and Y axis is Enzyme activity.

Assertion [A]: The graph of Rate of Enzyme activity vs Temperature is always a
parabola.

Reason [R]: Enzyme activity always increases with rise in temperature.

1. Assertion [A] is True and Reason [R] is False.

2. Reason [R] is True and Assertion [A] is False.

3. Assertion [A] is True and Reason [R] is True and is a correct explanation to [A].

4. Assertion [A] is True and Reason [R] is True but is not a correct explanation to [A].