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What is a vacuole? Parts of a cell – Biology

By |2017-05-29T10:37:21-07:00May 29th, 2017|Biology|

Vacuoles in an amoeba (a one-celled eukaryote) Vacuoles are little pockets in the cytoplasm of a cell where a cell stores food. You can see them with a good light microscope. Vacuoles are mostly made of water and amino acids. They have a lipid membrane around them to keep out the salty water [...]

How do cells get rid of waste? Excretion and cell biology

By |2019-05-13T06:35:52-07:00May 28th, 2017|Biology|

Cell waste: A cell with a vacuole Cell waste and vacuoles Soon after eukaryote cells began to make vacuoles to help them catch their food and store it, about 600 million years ago, the cells also began to use the vacuoles to get rid of garbage in the cell - molecules that the [...]

Vacuoles – Soap bubble project – Cell biology

By |2017-05-28T21:56:21-07:00May 28th, 2017|Biology|

A child blows soap bubbles You can see how the lipid membranes around the cell and around the vacuoles seal themselves off using soap bubbles. Soap bubbles are a kind of lipid membrane. They're not exactly the same as cell membranes, but they're made of fat molecules and they act the same way. [...]

Cell digestion – Parts of a cell – Cell Biology

By |2019-05-07T14:54:58-07:00May 28th, 2017|Biology|

Amoeba - a one-celled organism - Cell digestion How do cells get energy? All cells have to have some way to get energy from outside themselves, or they will starve to death. The earliest, simplest cells, about 3.5 billion years ago, got their food by drifting around in the ocean until they came [...]