QUESTION 2 (ENZYME ACTIVITY] The investigation was carried out to determine the effect of a detergent containing fat-
digesting enzymes on a fat stain.
The procedure was as follows:
Two identical cloths were used.
Cloths A and B had identical fat stains.
Cloth A was washed using a detergent not containing fat-digesting enzymes for five
minutes at 37°C.
Cloth B was washed using a detergent containing fat-digesting enzymes for five minutes
at 37°C.
The diagram below shows the results of the investigation.
Cloth B
Cloth A
Fat stain
(2)
2.1
Which property of enzymes is being investigates?
(2)
2.2
State TWO factors that were kept constant during this investigation.
(1)
2.3
What was the purpose of cloth A in the investigation?
2.4
State what should have happened to the enzymes if cloth B was washed in boiling
(1)
water.
(2)
2.5
Why do most washing powders contain protease as their enzyme?
(2
2.6 State a conclusion for this investigation.
(10)​