Aqa Gcse Combined Science Trilogy B2 Study Guide Rated A+

Transpiration {Ans: Brings water into leaf for photosynthesis and also evaporates water from the leaf to cool it down}Capillary {Ans: Allow food and oxygen to diffuse to cells while co2 diffuses out. Single cell thick. Allows 1 red blood cell at a time to full pick up all the oxygen}Root hair cell {Ans: Adapted by osmosis for uptake of water and active transport for uptake of mineral ions}Structure of xylem {Ans: Hollow tube strengthened by lignin for efficient transport of water in transpiration stream}Digestion {Ans: Large food molecules broken down to smaller ones by enzymes which is then absorbed to the bloodstream}Cancer {Ans: Changes in cells that lead to uncontrolled growth and mitosis}