Enzymes

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Question 36

An experiment was carried out to investigate the effect of temperature on the rate of amylase activity. The results are shown in the table below.

A line graph plotted from the table showing the rate of amylase activity on the y-axis (arbitrary units, from 0 to 7) against temperature on the x-axis (in degrees Celsius, from 0 to 70). The curve rises steadily from 20 °C, peaks at 40 °C, and then drops sharply towards zero by 65 °C.

Temperature ( $∘C^\circ\text{C}$ )	Rate of amylase activity (arbitrary units)
20	1.5
30	3.2
40	6.0
50	2.5
60	0.2

Explain why the activity of amylase decreases at temperatures above 40 $∘C^\circ\text{C}$ .

[2]

Enzymes

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Question 36

An experiment was carried out to investigate the effect of temperature on the rate of amylase activity. The results are shown in the table below.

A line graph plotted from the table showing the rate of amylase activity on the y-axis (arbitrary units, from 0 to 7) against temperature on the x-axis (in degrees Celsius, from 0 to 70). The curve rises steadily from 20 °C, peaks at 40 °C, and then drops sharply towards zero by 65 °C.

Temperature ( $∘C^\circ\text{C}$ )	Rate of amylase activity (arbitrary units)
20	1.5
30	3.2
40	6.0
50	2.5
60	0.2

Explain why the activity of amylase decreases at temperatures above 40 $∘C^\circ\text{C}$ .

[2]

Enzymes

Question 36

Enzymes Questions

Enzymes

Question 36

Enzymes Questions