Figure 10 shows a single-celled pond organism (Amoeba proteus).
(i) Which row of the table allows the net diffusion of oxygen into Amoeba proteus?
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Worked Solution & Example Answer:Figure 10 shows a single-celled pond organism (Amoeba proteus) - Edexcel - GCSE Biology - Question 6 - 2021 - Paper 1
Step 1
Which row of the table allows the net diffusion of oxygen into Amoeba proteus?
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Answer
The correct answer is option D. In this row, the concentration of oxygen in water is higher (10 ppm) compared to that in Amoeba proteus (4 ppm). This concentration gradient allows for the net diffusion of oxygen into the organism.
Step 2
Complete the equation for aerobic respiration.
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