B1 Keywords

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