Cells, Cells, Cells!

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