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Cells
Fill in the blanks
| Sentence | |
|---|---|
| All organisms or living things, are made of ____________. | cells |
| Every cell in every living thing comes from another cell that ___. | splits |
| A single-celled organism that can carry on all its life processes is call __________. | unicellular |
| Organisms made up of more than one cell are called _______. | multicellular |
| Scientists estimate that there are more than __________ kinds of unicellular organisms. | 1 billion |
| Both plant and animal cells perform life processes by using _______. | organelles |
| All cells are surrounded by a _________that controls the materials that move in and out of a cell. | cell membrane |
| The region between the cell membrane and the nucleus is filled with ______________. | cytoplasm |
| The cell's control center is called the ______________. | nucleus |
| The tiny power plants in the cell where food is broken down and energy is released are called | mitochandria |
| A structure in a cell used for storage of water, food, and wast is called a ____________________. | vacuole |
| Plant cells have a ____________, a rigid structure that serves as an outer covering. | cell wall |
| A green structure called a _____________uses the energy from the sun to produce food for the plant. | chloroplast |
| Cells are so small that a __________________is needed to view them. | microscope |
| In the 1940's, ____________ microscopes were created that were 40,000 times more powerful than previous microscopes. | electron |
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