Bioscience:Living Cells
All the organisms are composed of cells. Most cells are delicate and fragile, so it's difficult to explore them. Cells move rather slowly. Only under the camera lens of time-lapse photography can we see their movement clearly. Many cells are transparent. The most complex cells are probably some unicellular protein enzyme, for example, paramecium. They are sometimes called one-celled animals. They are even more delicate than the human cells.
- Added：2006
- Country：Australia
- Duration：36
- Time of update：2011/3/11 15:03:55