Paper 1 & 2 Topics

2. Latin naming system of organisms (genus + species).
3. Chemical reagent that tests for reducing sugars (glucose)
9. Liquid turning into a gas.
10. Time taken for half of the radioactive nuclei to decay.
12. Tiny air sacs in the lungs where gas exchange occurs.
16. A random change in DNA.
17. Movement of water through a partially permeable membrane.
19. blood cells, carry oxygen around the body.
22. Introducing antigens or dead pathogens to stimulate immunity without causing illness.
25. Movement of water from the roots to the leaves of a plant.
26. Enzyme that breaks down starch

1. In chromatography, the solvent (water) is the mobile phase, what is the stationary phase?
4. The green pigment that absorbs light energy for photosynthesis.
5. Number of waves passing a point each second.
6. A microorganism that causes disease.
7. One of four things animals compete for.
8. A protein produced by the immune system to target specific pathogens.
11. Change in species over time through natural selection.
12. The maximum height of a wave from its rest position.
13. The only food test that requires heating
14. Movement of particles from high to low concentration.
15. The variety of different species in an ecosystem.
18. Molecule produced when carbohydrase breaks down carbohydrates.
20. Small openings in leaves that control gas exchange.
21. Mass divided by volume.
23. A drug used to kill bacteria or stop them reproducing.
24. The process plants use to make glucose from light, CO₂, and water.