Year 12 Biology
Surface area to volume ratio and gas exchange
How surface area to volume ratio affects exchange, and gas exchange in single-celled organisms, insects, fish, the human lungs and plant leaves, including adaptations for reducing water loss.
Surface area to volume ratio and gas exchange free practice
No timer and no account needed. Check each answer as you go, then read the explanation.
1. Why does a correlation between a risk factor and a disease not prove that the risk factor causes the disease?
Your answer is marked as soon as you give it.
Want more of this topic?
- A narrated lesson video that works through the topic, with worked examples
- 100 practice questions at foundation, core and stretch level
- A worked explanation on every answer, and progress you can come back to
The lesson and practice open when you start the 7-day free trial. Cancel before it ends and you pay nothing.