Question

) draw a graph, predict and infer the result of the experiment
ii) explain the types and functions of different microorganisms
1. A scientist sets up samples of yeast and sugar in test tubes kept at different temperatures and records the height of the froth formed produced after 20 minutes. Here is a table of her results.
Temperature of sample/0 C Height of froth/mm
0 0
20 15
30 40
40 35
50 0

a) Plot the data in this table on the grid and draw a line graph.LO1/AO3(5)
















b) How did she prepare the samples to make sure that the test was fair? LO1/AO2 (2)
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c) What was the gas that made the froth? LO1/AO1 (1)
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d) In what process was the gas produced? LO1/AO1 (1)
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e) The scientist warmed up the sample at 00C and it made a froth. She cooled down the sample at 500C but it did not produce a froth. Explain the results. LO1/AO3 (2)
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2. Fungi and other microorganisms have spores with a protective covering. LO2/AO1
Name 3 things that the coat protects the microorganisms from. (1)
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3. Draw and name the 3 types of bacteria based on their shape. LO2/AO1(3)


4. How does the work of decomposers help plants?LO2/AO1 (2)
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5. Create a concept map on viruses. LO2/AO2(3)

Answer 1

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