Diffusion, Osmosis, and Active Transport (Edexcel GCSE Biology): Flashcards
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Diffusion definition
Diffusion definition
Particles move from high to low concentration
Diffusion energy requirement
Diffusion energy requirement
No energy - passive transport
Direction particles move in diffusion
Direction particles move in diffusion
Down concentration gradient (high to low)
Osmosis definition
Osmosis definition
Water from dilute to concentrated solution through partially permeable membrane
Water potential in dilute solution
Water potential in dilute solution
High water potential
Water potential in concentrated solution
Water potential in concentrated solution
Low water potential
Osmosis energy requirement
Osmosis energy requirement
Passive - no energy needed
Isotonic solution effect
Isotonic solution effect
No net water movement
Hypertonic solution effect
Hypertonic solution effect
Water moves out of cell
Hypotonic solution effect
Hypotonic solution effect
Water moves into cell
Animal cells in hypotonic solution
Animal cells in hypotonic solution
Burst
Turgor in plants
Turgor in plants
Pressure from water keeping leaves/stems rigid
Active transport definition
Active transport definition
Particles move from low to high concentration (against gradient)
Active transport energy source
Active transport energy source
ATP from respiration
Root hair cells use active transport for
Root hair cells use active transport for
Mineral ion absorption from soil