CAIE IGCSE Biology 22.1.6 Make Evidence Based Predictions Questions

Practise predicting biological outcomes from pH tables and extrapolating a numerical rate from concentration data, including units.

Exam points

predict survival and reproduction outcomes by extending a pH-tolerance relationship from a table
predict a numerical rate by extrapolating the concentration–rate pattern with units

[Maximum number: 1]

Yeast is used in bread-making. It respires anaerobically, producing carbon dioxide.

A baker wants to increase the rate of carbon dioxide production in the bread-making process. The baker trialled different concentrations of glucose solution in the bread dough.
Fig. 3.1 shows the results.

Fig. 3.1

Predict the rate of carbon dioxide production if the concentration of the glucose solution was 7.0 %. $\mathrm{cm}^{3}$ per min

4.1 ( $\mathrm{cm}^{3}$ per min) ;

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CAIE IGCSE Biology 22.1.6 Make Evidence Based Predictions Questions question 1