Gas exchange 0.0 / 5 ? Biologygas exchangeA2/A-levelAQA Created by: emilykeelingCreated on: 19-12-16 09:29 Why do animals need an exchange surface? To maintain materials needed for respiration and growth 1 of 7 What is diffusion? The movement of particles from an area of high concentration to low concentration down the concentration gradient 2 of 7 What are the openings in insect gas exchange called? Spiracles 3 of 7 What is the tidal volume in terms of lung capacities? Volume of air breathed in or out in a single breath when at rest 4 of 7 How do you calculate the the pulmonary ventilation rate? Tidal volume x no. of breaths in or out 5 of 7 Respiration occurs in the mitochondria at certain parts of the day False, it occurs in all plant cells at all times of day 6 of 7 What is an xerophyte? A plant which needs very little water 7 of 7
Exchanges with the external environment of both cells and organisms to maintain their internal environment 0.0 / 5
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