biology

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Across
  1. 3. Nerve cell.
  2. 4. Long, thin bundle of nerves that extends from the brain along the spine.
  3. 9. Resistance to a disease causing organism or harmful substances.
  4. 10. The solution of stopping the spread of disease.
  5. 12. The outer layer of skin.
  6. 14. Remember the same antigen production.
  7. 15. Microbes that can only grow and reproduce within other living things.
  8. 16. Micro-organisms that cause harm to us. Cns Central Nervous System
  9. 18. Single celled organisms.
  10. 21. Peripheral Nervous System
  11. 22. The space between the two connecting Neurons.
  12. 24. Liquid that contains many chemicals that break bacteria down.
  13. 25. Red cells in the body.
Down
  1. 1. Biological preparation that improves immunity.
  2. 2. Microbes that live off other living things.
  3. 3. Network of specialized cells called Neurons.
  4. 5. Transfers the data on the Neuron.
  5. 6. Fight against infections that make it past the first line of defence.
  6. 7. The 'nucleus' of the human.
  7. 8. Have antiseptic properties to flush foreign particles from the eye.
  8. 11. Detect the 'feeling' of the stimuli.
  9. 13. Small living things that cannot be seen by the naked eye.
  10. 17. Transmitted sexually. Destroys the immune system.
  11. 19. Holds the cell together.
  12. 20. An itchy rash also known as atopic dermatitis.
  13. 23. Something you detect from the outside environment.