The invisible movement of water across living cell membranes

Science · Published 23 October 2026 Swipe more like this →

In short: Understanding osmosis is fundamental to biology. This video breaks down how water moves in and out of cells based on solute concentrations, preparing you for upcoming 2026/27 GCSE exams.

Osmosis is defined by the proportion of water relative to solutes within a system. The video explains how these concentration gradients dictate whether water enters or exits a cell across its membrane.

By mastering these principles, students can predict cellular behavior in various environments. The content is specifically tailored for multiple exam boards including AQA, Edexcel, OCR, and CIE.

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