Question 36
Question 36 of 40
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Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
18. Biotechnology and gen...
18.1. Biotechnology

Describe the use of: (a) enzymes in biological washing powders (b) pectinase for fruit juice production (c) lactase for lactose-free milk

5. Enzymes
5.1. Enzyme action

Explain the specificity of enzymes in terms of the complementary shape and fit of the active site with the substrate (‘lock and key’ hypothesis)

4. Biological molecules
4.1. Biological molecules

Describe and be able to do chemical tests for: (a) starch (iodine solution) (b) glucose and maltose (Benedict’s solution) (c) protein (buret test) (d) lipids (ethanol emulsion test)