Biology

1234567891011121314
Across
  1. 1. if a cell ignores a signal to stop dividing, the newly divided cells from a mass called a ..
  2. 3. 2 lower chambers called the right and left
  3. 8. tine vessels connecting arteries to veins
  4. 9. two tubes that travel to the left and right wings
  5. 10. 2 upper chambers called the right and left
  6. 11. this blood vessel carries blood vessel to the heart
  7. 12. During ___, the chromosomes align in the centre of the cell
  8. 14. this blood vessel carries blood away from the heart
Down
  1. 1. how many kind or cells work together?
  2. 2. air that enters the air sacs is rich in..
  3. 4. seperated into 4 parts
  4. 5. thin band of muscle involved in breathing
  5. 6. protein rich liquid
  6. 7. 2 air filled,spongy organs
  7. 13. makes up less then 1% of blood volume