Cells

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Across
  1. 2. membrane The thin layer of membrane that allows substances in or out of the cell.
  2. 4. A single long molecule of DNA.
  3. 8. A unicellular organism that does not have a nucleus.
  4. 9. A unicellular or multicellular organism that has a nucleus.
Down
  1. 1. Small space in the cytoplasm that stores fluids, liquids, and waste.
  2. 3. Part of a cell that contains genetic material and divides during reproduction.
  3. 5. Small structures that carry out the chemical activities.
  4. 6. Organelles that break down food to produce energy for the cell.
  5. 7. The genetic material organized in chromosomes.