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Eukaryotes project – Eukaryotes and Microscopes – Biology Activities

By |2017-05-28T17:37:40+00:00May 28th, 2017|Biology|

Human cheek cells (seen through a microscope at 400X) The best way to understand cells better is to look at some through a microscope. If you don't have a microscope yourself, try going to a science museum or try to raise money to get one for your school. You can also get microscope [...]

What is cytoplasm? Parts of a cell – Cell Biology

By |2017-05-28T16:11:54+00:00May 28th, 2017|Biology|

A very simple cell (seen through a microscope) Inside all cells, from the most simple to the most complicated, there is cytoplasm. Cytoplasm is what all the rest of the stuff inside the cell floats in. Originally, cytoplasm was just the sea water that was inside the lipid membrane bubble when it first [...]

What is a sponge? Porifera, Evolution, and Biology

By |2018-04-13T14:35:53+00:00May 28th, 2017|Biology|

A group of brightly colored sponges in the ocean For almost three billion years, the only living things on earth were one-celled creatures, either prokaryotes or eukaryotes. Even today, the vast majority of the living things on earth are one-celled creatures, or microbes. But about 600 million years ago, a few one-celled creatures [...]

How do eyes work? Evolution and Biology

By |2018-04-16T08:42:19+00:00May 27th, 2017|Biology|

A flatworm with eye-spots Living creatures have been able to tell if it's light out or not  for about two billion years. That's when some eukaryote cells evolved to be able to sense changes in their surroundings and react to them. For instance, some cells had eye spots, which could sense sunlight. When they sensed sunlight, [...]