animal and plant cells

• Function of a nucleus

  Directs all the cells activities; contains the cells DNA
• Function of mitochondria

  site of reactions for aerobic respiration, transfers energy that the cell needs to work
• Function of cytoplasm

  site of chemical reactions, contains enzymes which control these reactions
• Function of ribosomes

  site of protein synthesis
• Function of cell wall

  Provides protection and support for a plant cell
• Function of permanent vacuole

  Filled with cell sap (a weak solution of sugar and salts) to help keep the cell turgid
• Function of chloroplasts

  Site of photosynthesis, contain chlorophyll which absorbs the sunlight
• Plant and algal cells also have a cell wall made of cellulose, which strengthens the cell.