Across
- 4. Finger-like projections in the small intestine (5)
- 6. Upper chamber of the heart (6)
- 7. Molecule that carries genetic information (3)
- 8. Cell fragment involved in clotting (8)
- 11. Movement of particles from high to low concentration (9)
- 13. Movement of substances against a concentration gradient (14)
- 15. Segment of DNA that codes for a protein (4)
- 17. Process plants use to make glucose(14)
- 19. Windpipe (7)
- 20. Enzyme that breaks down starch (7)
- 21. Green pigment in plants (12)
- 25. Structure made of DNA and proteins (10)
- 27. Respiration without oxygen (9)
- 28. Largest artery in the body (5)
- 30. Two main branches of the trachea (6)
- 31. Group of tissues that perform a specific function (5)
- 33. Group of organs working together (9)
- 35. Storage form of glucose in animals (8)
- 36. Biological catalyst (6)
- 37. Respiration with oxygen (7)
- 38. Site of aerobic respiration (12)
Down
- 1. Air sacs in the lungs (7)
- 2. Structure that prevents backflow of blood (5)
- 3. Site of protein synthesis (8)
- 4. Lower chamber of the heart (9)
- 5. Organelle where photosynthesis takes place (11)
- 9. Group of similar cells that perform a function (6)
- 10. Voice box (6)
- 12. Movement of water through a semi-permeable membrane towards a higher concentration of solute (7)
- 14. Blood vessel that carries blood to the heart (4)
- 15. Hormone that raises blood glucose levels (8)
- 16. Muscle that aids in breathing (9)
- 18. Control centre of a cell, stores genetic material (7)
- 22. Liquid component of blood (6)
- 23. Organ that produces bile (5)
- 24. Smallest blood vessel (9)
- 26. Process of releasing energy from glucose (11)
- 29. Protein in red blood cells that carries oxygen (10)
- 32. Substance that emulsifies fats (4)
- 34. Blood vessel that carries blood away from the heart (6)