Single-celled organisms
Most living things on Earth are a single cell that does every job of life by itself: it feeds, moves, grows and makes more of itself. A drop of pond water is full of them, such as the paramecium, which swims with tiny hairs, and the amoeba, which creeps and changes shape; yeast is a single-celled fungus that buds and makes bread rise. Simple many-celled living things, like thread algae, are rows of cells that are all alike.
Depth 1 · Foundation
You know that most living things are just one cell that does every job of life, can name some seen in a drop of pond water and yeast, and can tell them from simple many-celled ones like thread algae.
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Foundation
You know that most living things are just one cell that does every job of life, can name some seen in a drop of pond water and yeast, and can tell them from simple many-celled ones like thread algae.
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