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Figure 10 shows a single-celled pond organism (Amoeba proteus) - Edexcel - GCSE Biology - Question 6 - 2021 - Paper 1
Question 6
Figure 10 shows a single-celled pond organism (Amoeba proteus). (a) Which row of the table allows the net diffusion of oxygen into Amoeba proteus? | concentration ... show full transcript
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?
Answer
In order for oxygen to diffuse into the Amoeba proteus, the concentration of oxygen outside the organism must be higher than inside. Referring to the table, only row D shows a concentration of 10 ppm in water and 4 ppm in the Amoeba. Therefore, the correct answer is D.
Step 2