(a)[3]
On Fig. 3.1, add label lines and labels to identify: - an enzyme - a product - a substrate.
(b)[2]
Describe the meaning of the term enzyme.
(c(i))[1]
Circle the enzyme name that removes fat stains. amylase lipase pectinase protease
(c(ii))[2]
Explain why a washing powder used to remove fat stains and protein stains from clothes needs more than one type of enzyme.
(d(i))[1]
State the optimum temperature of the washing powder.
(d(ii))[1]
State the time for the washing powder to remove the stain at 20^{\circ}C.
(d(iii))[2]
Describe what happens to the enzymes in biological washing powder between 40^{\circ}C and 60^{\circ}C.