Chapter 1 - cells

Common sturctures between animal and plant cells

• Nucleus to control the cell's activities
• Cytoplasm where many chemical reactions take place
• a cell membrane that controls the movement of materials
• Mitochondria where energy is released during aerobic respiration
• ribosomes where proteins are made (synthesised)

Specialised cells

• As organisms develop, some of their cells become specialised to carry out paticular jobs. This is called differentiation.
• Some cells in plants may become xylem or root hair cells
• some cells in animals will develop into nerve or sperm cells.