SHS Biology · Year 2
Cell Structure & Transport practice questions
Cell theory, specialised plant/animal cells, and active transport, endocytosis and exocytosis.
23 questions in this topic: 8 recall, 8 applying skills and concepts, 4 strategic thinking and 3 extended thinking. Every one carries a written explanation.
Sample questions
3 of 23 questions in this topic. Sign up to answer them and see the explanations.
- Question 1Recall
Red blood cells lack a nucleus mainly because this adaptation
- aallows them to carry more haemoglobin, the protein that binds oxygen
- bmakes them photosynthetic
- callows them to divide more rapidly
- dgives them a rigid cell wall
- Question 2Strategic thinking
A cell needs to take in a large bacterium that cannot simply diffuse through the membrane. Explain which transport process is used and why simple diffusion would not work here.
- aEndocytosis is used, because it can engulf large particles by forming a vesicle, unlike diffusion which only works for small molecules moving passively across the membrane
- bDiffusion would work perfectly well for a whole bacterium
- cActive transport is used, requiring no vesicle formation
- dOsmosis is used, since bacteria are made mostly of water
- Question 3Skills & concepts
Guard cells surrounding the stomata mainly function to
- acontrol the opening and closing of the stomata, regulating gas exchange and water loss
- bproduce milk for offspring
- ctransport oxygen around the body
- dstore starch only
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