Diffusion (AQA GCSE Biology Combined Science): Flashcards
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Diffusion definition
Diffusion definition
Particles move from higher to lower concentration
Type of transport for diffusion
Type of transport for diffusion
Passive transport (no energy required)
Concentration gradient meaning
Concentration gradient meaning
Difference in concentration of particles across a space
Direction particles move in diffusion
Direction particles move in diffusion
From higher to lower concentration (down the gradient)
Gases that diffuse easily across cell membranes
Gases that diffuse easily across cell membranes
Oxygen and carbon dioxide
Small dissolved molecules that can diffuse
Small dissolved molecules that can diffuse
Glucose and amino acids
Where oxygen diffuses in the lungs
Where oxygen diffuses in the lungs
From alveoli into the blood
Where carbon dioxide diffuses in the lungs
Where carbon dioxide diffuses in the lungs
From blood into alveoli
Where nutrients diffuse in small intestine
Where nutrients diffuse in small intestine
From gut into blood
Why diffusion is important in biology
Why diffusion is important in biology
Essential for maintaining homeostasis