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Vacuoles – Soap bubble project – Cell biology

By |2017-05-28T21:56:21+00:00May 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. [...]

How did the first cells form? Evolution and Biology

By |2018-04-04T21:31:15+00:00May 28th, 2017|Biology|

A very simple cell (seen through a microscope) like the first cells RNA and lipid membranes Sometime around four billion or 3.5 billion years ago, lipid membranes and RNA or DNA got together to form the earliest living cells on Earth. Nobody understands exactly how this happened. But somehow some RNA or DNA molecules, [...]