Cells and Systems

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Across
  1. 4. The type of cell that does not have a nucleus.
  2. 5. Something all living things use to perform life processes, often obtained from food or sunlight.
  3. 10. The process by which living things make new organisms of their kind.
  4. 11. The tool that magnifies tiny objects so they can be observed in detail.
  5. 13. A group of organs working together to carry out a life process.
  6. 15. The cause-and-effect relationship that shows how living things react to changes in their environment.
  7. 17. The organelle that acts as the “control center” of the cell.
  8. 19. The smallest unit of life that can perform all life functions.
  9. 20. The feature that all living things have in common; every living organism is made of one or more of these.
  10. 21. A group of tissues working together to perform a task.
  11. 23. Structures inside cells that perform specific functions.
  12. 24. The system that helps transport oxygen and nutrients throughout the body.
  13. 26. The system that helps the body take in oxygen and remove carbon dioxide.
  14. 27. A group of similar cells that work together to perform a function.
  15. 28. The system of interacting parts that work together to perform life processes.
  16. 30. The type of cell that has a nucleus and organelles surrounded by membranes.
Down
  1. 1. The jelly-like substance inside a cell that holds organelles in place.
  2. 2. Organelles that release energy by breaking down food molecules.
  3. 3. The scientist who first observed cells in cork using a microscope.
  4. 6. The process that moves molecules from high to low concentration without energy.
  5. 7. – The traits that all living things share, such as growth, reproduction, and response to stimuli.
  6. 8. The process that maintains stable internal conditions in the body.
  7. 9. The specialized structure in plant cells that helps them stay rigid.
  8. 12. MEMBRANE The thin barrier that surrounds every cell and controls what enters or leaves.
  9. 14. The basic idea that all living things are made of cells, and cells come from other cells.
  10. 16. The part of the nervous system that connects the brain to the rest of the body.
  11. 18. The process plants use to convert sunlight into food energy.
  12. 22. The body system responsible for breaking down food into nutrients.
  13. 25. The body system that detects and responds to information from the environment.
  14. 29. The part of a plant cell where photosynthesis takes place.