Cells, Cells, Cells!

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Across
  1. 3. A living thing so small, it can only be seen through a microscope
  2. 8. A plant cells has this. An animal cells doesn't.
  3. 9. The command center for the cell
Down
  1. 1. Simple single-celled organism that can be good for people or cause illness or infection
  2. 2. The building blocks of living things. There are 37 trillion in the human body
  3. 4. The organelle that surrounds the cell, letting some things in and keeping others out
  4. 5. A structure within a cell with a specific function (for example, a ribosome)
  5. 6. The reproduction process that leads to a daughter cell identical to the parent cell
  6. 7. The reproduction process that leads to a daughter cell that's different from the parent