Cell structure

• Ceus


  • Unicellular organisms: made up of one cell (eg bacteria)
  • Multicellular organisms: made up of more than one, millions even
• Mitochondria


  • Present on
  • Site of aerobic respiration-Produce energy for cell
• Ribosomes


  • Present on
  • Site of Protein synthesis
• Nucleus


  • Controls cell activities
• Cell wall


  • Boundary louter layer. Maintains cell structure
• Cell membrane


  • Controls what enters Exits the cell
• Cytoplasm


  • Mainly liquid, most chemical reactions take place
• Vacuole


  • Large bag contains cell sap (mixture water, sugar, salt) support cell shape
• Chloroplast


  • Contains Chlorophyll, found in some plant cel, site of Photosynthesis
• Bacteria


  • Cell membrane
  • Cell wall
  • Cytoplasm
  • Ribosomes
  • Plasmid Circular chromosome
• Fungus


  • Circular chromosome/Plasmid-Small Circular DNA molecules that contain genes
• • Ribosomes
  • Cell membrane
  • Cell wall
• Hormones are chemical messengers that regulate various physiological processes such as growth, metabolism, reproduction, and homeostasis.
• The main function of the endocrine system is to secrete hormones into the bloodstream, which then travel throughout the body.