CAIE IGCSE Biology 22.1.6 Make Evidence Based Predictions Questions

Practise extending biological patterns to predict outcomes and numerical rates, with units and stated assumptions.

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