Across
- 3. opens and closes stomata
- 5. thin walls and valves to prevent back flow.
- 6. an action which protects the body from harm
- 7. a place where an organism lives
- 11. chemical messengers.
- 17. the name given to the structure of DNA
- 19. all the populations living together
- 20. made from sugar and phosphate and part of double helix structure.
- 23. device used to measure transpiration rates
- 25. controls breathing rate and heart rate
- 26. respiration without oxygen
- 28. the set of genes an organism possesses.
- 30. used to cut out the insulin gene.
- 33. moves water up the plant
- 36. happens to a plant cell when placed in a hypertonic solution.
- 37. breakdown of a substrate.
- 38. where eggs are produced
- 39. a mutagenic agent
Down
- 1. unspecialised cells
- 2. enhance minerals in soil.
- 4. physical appearance of the organism due to there genes.
- 8. where aerobic respiration is completed.
- 9. supplies the heart with blood
- 10. skin of leaf
- 12. released when glucose has gone.
- 13. where sperm are produced
- 14. site of protein synthesis.
- 15. last in the hierarchy
- 16. the gene that masks the another gene.
- 18. indicator species
- 21. spindle fibres pull these to opposite poles.
- 22. transports sugar up and down the plant
- 24. the type of variation that shows characteristics ranging from one extreme to another.
- 27. the transport which requires energy.
- 29. bacteria produce _________.
- 31. the role an organism plays in its ecosystem
- 32. an inherited characteristic that makes an organism well suited to survival
- 34. carries the code to the ribosome.
- 35. part of the heart which is thicker walled
- 40. the movement of molecules from an area of high concentration to an area of low concentration.