A-Level UK (AQA, Edexcel, OCR) · Biology
Exchange and transport
7 practice questions, each with the answer and an explanation.
Practise Exchange and transport now
Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 7 questions
- Why do larger organisms need specialised exchange surfaces and mass transport systems?
- During inspiration in a mammal, what happens to the diaphragm and external intercostal muscles?
- A person has a stroke volume of 70 cm3 and a heart rate of 72 beats per minute. What is the cardiac output?
- Which feature of fish gills increases the efficiency of oxygen uptake?
- What is the role of the Casparian strip in a root?
- Which statement best explains the cohesion-tension theory?
- Mass flow in the phloem is explained by the pressure-flow hypothesis. What is the first step in loading at the source?
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