AQA Extension Biology B3 AQA, A lot of definitions taken from the revision guides. 2.5 / 5 based on 2 ratings ? BiologyGCSEAll boards Created by: TomCreated on: 15-06-11 17:00 Osmosis The passing of a water down a concentration gradient (high to low), through a partially permeable membrane. 1 of 5 Diffusion The passing of a liquid or gas down a concentration gradient. 2 of 5 Active transport The movement of a substance against the concentration gradient (low to high) using energy from respiration. 3 of 5 Alveoli Tiny moist air sacs in the lungs with a large surface area and a rich blood supply which maintain a concentration gradient in both directions. 4 of 5 Photosynthesis Equation Carbon Dioxide + Water + Energy --> Glucose + Oxygen 5 of 5
Comments
No comments have yet been made