B1 Keywords

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Across
  1. 2. Something that causes cancer, such as tar in tobacco smoke
  2. 5. Substance that diffues across a synapse to pass an electrical impulse between two neurones
  3. 7. When the alleles for a genotype are different
  4. 9. The alleles for a certain characteristic that are found in an organism
  5. 10. Microorganism that causes disease
  6. 11. Stimulant in tobacco smoke that is addictive
  7. 12. Type of cell that receives a stimulus and converts it into an electrical impulse
  8. 13. Damage to the liver caused by drinking large amounts of alcohol over a long time
  9. 16. Substance that is used to stop the spread of pathogens
  10. 18. Hormone released by pancreas which causes the conversion of glycogen to glucose
  11. 21. Narrowing of the blood vessels
  12. 22. The physical characteristic of an organism
  13. 24. Organism that makes its own food, such as a plant
  14. 26. Widening of the blood vessels
  15. 27. Disease in which the body cannot control blood glucose concentration at the correct level
  16. 29. A long thread of a molecule called DNA
  17. 31. Set of plant hormones that can cause seeds to germinate; and fruits and flowers to form
  18. 33. Point at which two neurones meet
  19. 34. Organism that transfers a pathogen from one person to another
  20. 35. a substance which changes the way the body works
  21. 36. Hormone released by pancreas when blood glucose levels are too high
  22. 37. Type of bacteria that convert nitrates into nitrites
  23. 38. A stored form of glucose
  24. 40. The long extension of a neurone that carries an electrical impulse away from the cell body towards other neurones
  25. 41. A feeding relationship where one organism is benefited and one is harmed
Down
  1. 1. A cell that transmits electrical impulses
  2. 3. Type of bacteria that can take nitrogen from the atmosphere and convert it into ammonia
  3. 4. Illness that is caused by a microorganism and can be caught from an infected person (two words)
  4. 6. consumer An organism that eats producers (two words)
  5. 8. Tropism in response to gravity
  6. 14. A disease caused by alleles (two words)
  7. 15. The addition of chemicals to water, such as nitrates, which encourages plant growth
  8. 17. Muscle or gland in the body that performs an action when an impulse from the nervous system is received
  9. 19. Antibiotic that kills or slows the growth of microorganisms
  10. 20. Tropism in response to light
  11. 23. Controlling the internal environment of the body at optimum conditions
  12. 25. Type of bacteria that break down nitrates to nitrites
  13. 28. A gland that makes and releases hormones
  14. 30. When the alleles for a genotype are the same
  15. 32. A change in the environment that is detected by a receptor cell
  16. 39. A section of DNA that carries the instructions for a characteristic