‹ Biology simulationsBiology · IGCSE 0610 · 2 Organisation of the organismSeven simulations covering Topic 2: cell structure (2.1) and the size of specimens (2.2). Explore cells in 3D, test yourself on their parts, watch cells divide and specialise, build up from cell to organism, then measure and calculate magnification. The tab marked Extended is for the Supplement.
Turn each cell and click any part to find out what it is and what it does. Animal and plant cells share most structures, but only plant cells have a cell wall, chloroplasts and a large permanent vacuole. A bacterial cell is much smaller and has no nucleus: its DNA is a loop in the cytoplasm.
Two ways to practise. Find it: read what a structure does, then click it in the 3D cell. Name it: one structure glows, choose its name. The cell type changes each question.
New cells are only ever produced by the division of existing cells. Each time a cell divides, its nucleus divides first so both new cells get a full copy of the genetic material. The new cells then grow before they divide again. This is how an organism grows from a single fertilised egg.
In a multicellular organism, cells become specialised: their shape and contents suit one particular job. Pick a cell, watch it at work and read how its structure matches its function.
Similar cells working together form a tissue. Different tissues working together form an organ. Organs working together form an organ system, and all the systems together make an organism. Step up the levels for a human and for a plant.
magnification = image size ÷ actual size. Drag the ruler to measure the image between A and B, then work out the missing value. Keep both sizes in the same unit, millimetres. Magnification has no unit, just ×.
Cells are measured in micrometres (µm): 1 mm = 1000 µm. Zoom through the scales from a bacterium to a flea, each drawn at its true relative size, then practise converting between mm and µm.
Seven interactive 3D and 2D simulations for Cambridge IGCSE Biology 0610 topic 2 Organisation of the organism: click the structures of 3D animal, plant and bacterial cells, a find-it and name-it quiz, cells dividing, seven animated specialised cells, cells to tissues, organs, organ systems and organisms, magnification with a draggable ruler, and converting between millimetres and micrometres.
Seven simulations covering Topic 2: cell structure (2.1) and the size of specimens (2.2). Explore cells in 3D, test yourself on their parts, watch cells divide and specialise, build up from cell to organism, then measure and calculate magnification. The tab marked Extended is for the Supplement.
Organisation of the organism is a free, browser-based simulation for Cambridge IGCSE Biology 0610 (topic 2 Organisation of the organism). The course is assessed in Paper 1/2 (Multiple choice), Paper 3/4 (Theory), Paper 5 (Practical Test), Paper 6 (Alternative to Practical). Syllabus for examination in 2026-2028. There are 7 tabs, each a self-contained experiment with its own controls and live readings, and nothing to install: it runs on a laptop, tablet or classroom projector.
Full syllabus map: IGCSE Biology 0610 topic 2.
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