Notes on Biology
Levels of Organisation and Cell structure
Nucleus - 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 membrane
Diffusion = anything from a high…