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O-LevelBiologyEnzymes5090/11 · May/June 2021 · Q341 Mark

Six bean seeds were soaked in cold water. Three of them were boiled and cooled. The boiled and the non-boiled seeds were chopped up and then placed on the surface of agar jelly containing starch. After two days, all the seeds were removed and the jelly was tested with iodine solution. The diagram shows the result of the experiment. What is the explanation for the results with the non-boiled bean seeds? [Figure 14.1]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AThey absorb iodine.
BThey absorb starch.
CThey contain acid.
DThey contain amylase.

✓ Correct answer

D: They contain amylase.

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About this question

Topic
Enzymes, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2021 Paper 1 Variant 1, question 34.

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