Factors that Affect Diffusion (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
What is a concentration gradient?
What is a concentration gradient?
Difference in particle concentration between two areas
Effect of steeper concentration gradient
Effect of steeper concentration gradient
Faster diffusion rate
Effect of higher temperature on diffusion
Effect of higher temperature on diffusion
Increases rate (particles move faster)
Effect of larger surface area on diffusion
Effect of larger surface area on diffusion
Increases diffusion rate
Effect of shorter distance on diffusion
Effect of shorter distance on diffusion
Faster diffusion
Small vs large molecules - diffusion rate
Small vs large molecules - diffusion rate
Small molecules diffuse faster than large
Nonpolar vs polar molecules - diffusion
Nonpolar vs polar molecules - diffusion
Nonpolar diffuse easier than polar through membranes
Role of alveoli in diffusion
Role of alveoli in diffusion
Large surface area for rapid gas exchange
Role of villi in diffusion
Role of villi in diffusion
Large surface area & thin walls maximize diffusion
How is CO2 removed from cells?
How is CO2 removed from cells?
Diffuses from cells into blood for exhalation