How can root hair cells take up mineral ions when their concentration is lower in the soil solution than inside the cells?
Active transport moves the ions across the cell membrane against their concentration gradient.
Cambridge IGCSE (9–1) Biology 0970 (Extended) (2026–2028) · 3.3
Revise Cambridge IGCSE (9–1) Biology 0970 (Extended) (2026–2028) specification point 3.3, Active transport, with free active-recall flashcards. Flip through the set or review every question and answer below.
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How can root hair cells take up mineral ions when their concentration is lower in the soil solution than inside the cells?
Active transport moves the ions across the cell membrane against their concentration gradient.
What role do carrier proteins play in active transport?
They move molecules or ions across cell membranes.
What supplies the energy for active transport in root hair cells?
Respiration.