SCI term 2 task

• Cell theory


  All living things are made of cells, cells are the basic units of all living organisms, and all cells come from pre-existing cells
• Drawing biological diagrams of plant and animal cells

  From slides on a light microscope
• Cell respiration


  Chemical change that occurs in animal cells
• Photosynthesis


  Chemical change that occurs in plant cells
• Using a light microscope


  Focus on onion cells that have been wet mounted correctly
• Parts of a light microscope

  • Their functions
• Organelles within plant and animal cells

  • Nucleus
  • Cytoplasm
  • Cell membrane
  • Cell wall
  • Mitochondria
  • Vacuole
  • Chloroplast
• Unicellular organism


  Single-celled organism
• Multicellular organism


  Many-celled organism
• Organisation levels of multicellular organisms

  1. Cells

  2. Tissues

  3. Organs

  4. Organ systems

  5. Organisms
• Specialised cell


  Cell adapted to perform a specific function
• Cell requirements for plant photosynthesis and respiration


  • Unspecified
• Role of leaves


  Exchange of oxygen and carbon dioxide required for cell processes
• Role of root and stem

  Gaining nutrients and water required for cell processes
• Cellular respiration


  Process in living organisms
• Matter


  Particles held together by attractive forces and constantly moving
• Addition and removal of heat

  Affects particle speed and causes changes of state
• Density


  Described by a simple particle model
• Atom


  Number of protons and electrons, related to position on Periodic Table
• Elements 1-20 and common transition metals


  • Symbols
• Elements can change shape or form through physical changes, with no new substance being formed
• Observable physical properties


  • Metal elements
  • Non-metal elements
• Compound


  Different elements combining by chemical bonding
• Signs of chemical reactions

  Formation of new substances
• Word equation


  Showing reactants and products for a chemical reaction
• Physical change


  Reversible change in arrangement of particles
• Chemical change


  Formation of new substances
• Mixture


  Different substances lacking chemical bonds
• Diagrams can model the difference between elements, compounds, and mixtures in terms of the type and arrangement of particles
• water H20
• hydrochloric acid HCI
• Carbon dioxide CO2
• Sodium chloride Na CI
• Vinegar CH3COOH
• Glucose C6H12O6