understanding cells

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Across
  1. 4. Reduces chromosome number for reproductive cells.
  2. 6. cells Contraction, allow movement.
  3. 7. Cell division for growth and repair.
  4. 10. cells Transmit electrical signals, long shape.
  5. 12. cell Complex, has nucleus and organelles (e.g., plant/animal cells).
  6. 14. membrane Outer boundary, controls entry and exit of substances.
  7. 15. Make food through photosynthesis (in plant cells).
Down
  1. 1. cellsAdapted structures for specific functions in multicellular organisms.
  2. 2. Control center, contains DNA with genetic instructions.
  3. 3. Powerhouse of the cell, produces energy.
  4. 5. Make proteins, essential for cell function.
  5. 8. cell Simple, no nucleus, smaller (e.g., bacteria).
  6. 9. Jelly-like substance, holds organelles in place.
  7. 11. wall Provides structure and support (in plants).
  8. 13. blood cells Carry oxygen, biconcave shape, no nucleus.