Active transport (AQA GCSE Biology Combined Science): Flashcards
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Direction of active transport movement
Direction of active transport movement
From lower to higher concentration (against gradient)
Energy requirement of active transport
Energy requirement of active transport
Requires energy from respiration
Energy source for active transport
Energy source for active transport
ATP (adenosine triphosphate) from respiration
Substances absorbed by root hair cells
Substances absorbed by root hair cells
Water and mineral ions from soil
Mineral ion conc. in root hair cells vs soil
Mineral ion conc. in root hair cells vs soil
Higher inside root hair cells than in soil
Nutrients absorbed by gut via active transport
Nutrients absorbed by gut via active transport
Glucose and amino acids
Challenge for nutrient absorption in gut
Challenge for nutrient absorption in gut
Concentration may be lower in gut than blood
Benefit of active transport for nutrients
Benefit of active transport for nutrients
Absorbs nutrients even when lower concentration outside cell
Processes requiring maintained conc. gradients
Processes requiring maintained conc. gradients
Nerve impulse transmission and muscle contraction
Process moving against concentration gradient
Process moving against concentration gradient
Active transport