Paper 3 · November 2023 · Cell Structure and Membranes
Endocytosis differs from osmosis in that endocytosis
Amoves water down a water potential gradient, which osmosis does not.
Boccurs only in plant cells, while osmosis occurs in cells generally.
Crequires ATP, while osmosis is a passive process.
Dis a passive process that needs no metabolic energy, unlike osmosis.
Explanation
Endocytosis is active: the membrane invaginates and pinches off around extracellular material, and this requires ATP. Osmosis is passive diffusion of water down a water potential gradient and needs no metabolic energy.
Derived from ZIMSEC Biology 6030/3 Paper 3, November 2023, Q1