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biology 0610printed 40 · PDF 40
328 pagesrevision 46933
printed 40 · PDF 40
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Core Supplement
1 Describe active transport as the movement of 2 Explain the importance of active transport as
particles through a cell membrane from a region a process for movement of molecules or ions
of lower concentration to a region of higher across membranes, including ion uptake by root
concentration (i.e. against a concentration hairs
gradient), using energy from respiration
3 State that protein carriers move molecules or
ions across a membrane during active transport
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