- Created by: freya123k- Created on: 22-05-16 13:12Notes on BiologyLevels of Organisation and Cell structureNucleus - contains the genes, which control the cell (control center). Cytoplasm - chemical reactions like respiration happen here. Cell surface membrane - lets some substances into the cell, and keeps others out. Cell wall - makes a rigid box which supports the cell. Cell sap vacuole - stores sugar and makes the cel fill the cell wall. Chloroplast - photosynthesis happens here.- Cell wall- Cell surface membrane- Cell sap vacuole- Cell membraneDiffusion = anything from a high…