Across
- 3. what is used to identify unfamiliar organisms
- 4. produced by follicle that develops into a solid body
- 6. some proteins also need ....... molecules and these are absorbed from the soil in the form of sulphates
- 9. plants that lives on sand dunes
- 14. most mature plant cells have a large, fluid-filled space called a ...........
- 15. a group of organisms of one species
- 16. poisonous proteins produced by bacteria
- 17. what are present in the membrane system, in the mitochondria in special vacuoles and in the fluid part of the cytoplasm
- 19. what is the substance that increases the rate of a chemical reaction and is not changed by the reaction
- 20. a junction between two neurones
- 21. change in adaptive features of population
- 23. produced from plant sources
- 24. light-sensitive cells in the retina that are able to distinguish colours
- 27. amino acids are made by combining ..........with sugar molecules
- 29. what is the net movement of molecules and ions from a region of their higher region of their lower concentration down a concentration gradient
- 30. a protein gives dough a sticky plastic texture
- 31. network of interconnected food chains
- 32. one of the factors that effect rate of transportation, where it is inversely proportional
- 33. part of the vascular bundle where water and salts mainly travel in
- 34. fusion of gamete
- 36. what is the net movement of water molecules from a region of higher water potential to a region of lower region of water potential through a partially permeable membrane
- 37. a compound produced by mitochondria, which is used by the cell as a source of energy
- 40. can be produced by commercial fermentation using readily available
- 41. the process in which harmful bacteria and cell debris at the site of an infection are engulfed and digested by a certain type of white cell.
Down
- 1. a capillary repeatedly divided and coiled, making a knot of vessels
- 2. what is the enzyme that breaks down starch into sugar
- 5. goblet cells produce this substance, which traps pathogens and small particles
- 7. method of growing plants without soil
- 8. waste product formed by the deamination of amino acids in the liver
- 10. oxygen is needed for this chemical reaction
- 11. what is the breakdown of food into smaller pieces without chemical change to the food molecules
- 12. cells in the body that have retained their power of division
- 13. what is a group of organisms that can reproduce to reproduce to produce fertile offspring
- 18. a blood vessel that returns blood from the tissues to the heart
- 22. a harmless form of a virus that is used to build immune
- 23. A .......... must contain enough carbohydrates and fats to meet our energy needs
- 25. any substance taken into the body that modifies
- 26. what is the sub units of carbohydrate
- 28. what type of microscope has two convex lenses
- 35. chemical that causes cancer
- 38. an organ that carries out the gas exchange and respiration process
- 39. process take place in female's ovary