Higher Human Biology

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Across
  1. 5. The T-lymphocytes attack the body’s own cells
  2. 6. Chemicals that bind to and stimulate specific receptors mimicking the action of a neurotransmitter at a synapse
  3. 7. Glial cells produce the myelin sheath
  4. 9. Involves the engulfing of pathogens and their destruction by digestive enzymes contained in the lysosomes
  5. 12. A neurotransmitter that induces feelings of pleasure and reinforces particular behaviour by activating the reward pathway of the brain
  6. 14. DNA structure that forms the double helix
  7. 16. These inhibitors bind at the active site preventing the substrate from binding
  8. 18. Form dense networks around body tissues and have very thin walls to allow efficient exchange of materials
  9. 19. Reactions breakdown large molecules into smaller molecules and release energy
  10. 22. Neural pathway where impulses from several neurons travel to one neuron
  11. 23. The release of (ovum) from a follicle in the ovary
  12. 25. Reactions involve the building up of large molecules from small molecules and require energy
  13. 26. The accumulation of fatty material forming an atheroma or plaque beneath the endothelium of the artery
  14. 27. A substance which makes the vaccine more effective
Down
  1. 1. Programmed cell death
  2. 2. A nerve releases noradrenaline which increases heart rate.
  3. 3. Is a procedure which the collection of foetal cells contained within amniotic fluid.
  4. 4. Cells that divide excessively because they do not respond to regulatory signals
  5. 8. Organising information into groups for the transfer into the long term memory
  6. 10. Each triplet of bases on mRNA
  7. 11. The use of genome information in the choice of drugs
  8. 13. The mutation where a section of the chromosome is removed.
  9. 15. Chemicals that bind to specific receptors blocking the action of a neurotransmitters at a synapse
  10. 17. A hormone produced by the interstitial cells which promote sperm production
  11. 20. A neurotransmitters that stimulate neurons involved in reducing the intensity of pain.
  12. 21. These molecules have a low affinity for the active site
  13. 24. Cells that divide by mitosis and meiosis