Under the Microscope

A drawn cell appears — sometimes animal, sometimes plant — and you tap the part you are asked for.

Sometimes you get the name, sometimes only what it does — which is how an exam asks.

Watch which cell you got: chloroplasts and the wall are only in the plant one, centrioles only in the animal one.

Or switch to real slides: actual microscope photos —a louse, pollen, diatoms, a fly's eye, one of your hairs, a snowflake— with one area circled for you to identify.