Organisation

• Tissues


  Similar cells are organised
• Organs

  Similar tissues are organised
• Organ systems


  Organs work together to perform a function
• Types of tissues


  • Muscular
  • Glandular
  • Nervous
• Active site


  Where the substrate binds to the enzyme
• Substrate


  The molecule that the enzyme acts upon
• Product


  The molecule(s) formed by the enzyme-catalysed reaction
• Enzymes break down large molecules into smaller ones like sugar, amino acids and glycerol
• Enzymes can be denatured if there is a change in temperature
• Transpiration


  Loss of water from the leaves
• More water is needed from the xylem to replace water lost through transpiration
• Photosynthesis


  Occurs in the palisade layer
• Cell growth and division


  Occurs in the meristem
• Red blood cells


  Carry oxygen from the lungs to the body
• White blood cells


  Act in the immune response
• Platelets


  Help blood to clot
• Plasma


  Carries everything in the blood
• Arteries


  Carry blood away from the heart
• Veins


  Carry blood towards the heart
• Capillaries


  Site of gas exchange
• Amylase


  Breaks down starch
• Protease


  Breaks down proteins
• Lipase


  Breaks down lipids
• Trachea


  Carries air to the lungs
• Bronchioles


  Carry air to the alveoli in the lungs
• Alveoli


  Site of gas exchange in the lungs
• Diaphragm

  Muscle that controls breathing
• The lungs are operated by the diaphragm
• Air gets to the lungs through the trachea
• Communicable diseases can be passed from person to person
• Non-communicable diseases like cancer are caused by uncontrolled cell growth
• Transpiration accounts for 90-95% of water loss from plants
• Photosynthesis occurs in the palisade layer of the leaf
• Cell growth and division occurs in the meristem
• Red blood cells carry oxygen from the lungs to the body
• White blood cells act in the immune response
• Platelets help blood to clot
• Plasma carries everything in the blood
• Arteries carry blood away from the heart, veins carry blood towards the heart, and capillaries are the site of gas exchange
• Amylase breaks down starch, protease breaks down proteins, and lipase breaks down lipids