To match the labeled letters with the different forms of transport through the phospholipid bilayer, here is the correct pairing:
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A - Diffusion: The movement of molecules from an area of higher concentration to an area of lower concentration directly through the lipid bilayer.
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B - Facilitated Diffusion: The process of transporting molecules across the membrane via protein channels or carriers, also driven by concentration gradients.
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C - Osmosis: The specific movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.
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D - Active Transport: The movement of molecules against their concentration gradient (from low to high concentration) using energy (ATP).
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E - Endocytosis & Exocytosis: Processes used to move large molecules or particles into (endocytosis) or out of (exocytosis) the cell via vesicles.
Make sure to match the letters to their descriptions based on this explanation!