Question 17
Question 17 of 40
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No letter options?
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
2. Biological molecules
2.1. Testing for biological molecul...

describe and carry out a semi-quantitative Benedict’s test on a reducing sugar solution by standardising the test and using the results (time to first colour change or comparison to colour standards) to estimate the concentration

3. Enzymes
3.1. Mode of action of enzymes

outline the use of a colorimeter for measuring the progress of enzyme-catalysed reactions that involve colour changes

13. Photosynthesis
13.2. Investigation of limiting fac...

describe and carry out investigations using redox indicators, including DCPIP and methylene blue, and a suspension of chloroplasts to determine the effects of light intensity and light wavelength on the rate of photosynthesis