Cell Biology, Organisation & Infection and response

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Across
  1. 3. Movement of particles from high to low concentration (9)
  2. 4. Single-celled organisms, often parasitic (8)
  3. 6. Complex cell with a nucleus (9)
  4. 7. Substance used to stimulate the production of antibodies (7)
  5. 10. Tissue that transports sugars in plants (6)
  6. 12. The body's ability to resist a particular infection (7)
  7. 14. Tissue that transports water in plants (5)
  8. 16. Movement of blood through the body (11)
  9. 19. All chemical reactions in an organism (10)
  10. 21. Segment of DNA coding for a trait (4)
  11. 23. Process of taking in nutrients by cells or tissues (10)
  12. 26. Breakdown of food into smaller molecules (9)
  13. 28. Rapid spread of disease in a specific area (8)
  14. 29. Type of cell division for growth and repair (7)
  15. 30. Substance that increases the rate of a reaction (8)
  16. 32. Infectious agent that replicates inside living cells (5)
  17. 33. Medicine used to kill or inhibit bacteria (10)
  18. 34. Microorganism that causes disease (8)
  19. 36. Structure made of DNA and protein (10)
  20. 38. When an enzyme loses its shape and function (8)
Down
  1. 1. Process of releasing energy from food (11)
  2. 2. Simple cell without a nucleus (10)
  3. 3. Molecule carrying genetic information (3)
  4. 5. Isolation to prevent the spread of disease (9)
  5. 8. Substance that triggers an immune response (7)
  6. 9. Group of organs working together (6)
  7. 11. Diffusion of water across a membrane (7)
  8. 13. Single-celled microorganisms, some of which cause disease (8)
  9. 15. Type of organism that can cause infections like athlete's foot (6)
  10. 17. Period between infection and the appearance of symptoms (10)
  11. 18. Substance an enzyme acts upon (9)
  12. 20. Type of transport requiring energy (6)
  13. 22. Worldwide spread of a new disease (8)
  14. 24. Type of immunity when the majority of the population are vaccinated and this protects the unvaccinated (4)
  15. 25. Location on the enzyme where the substrate binds
  16. 27. Organism that transmits a pathogen (6)
  17. 31. Protein produced by the immune system to neutralize pathogens (8)
  18. 35. Protein that speeds up chemical reactions (6)
  19. 37. The theory to describe how enzymes bind with substrates