Biology 2 - Unit 1 Revision sheet 1

Short Questions

  1. Give 2 examples of diffusion, osmosis and active transport
  2. Draw the cell membrane and show how molecules pass across the membrane
  3. Explain the difference between aerobic and anaerobic respiration. Include products and efficiency.
  4. List the chemical equations for photosynthesis and respiration.
  5. What is water needed for in plants and in animals?
  6. List the plant nutrients - both macro and micro
  7. What would happen to a plant lacking in calcium?
  8. List the nutrients needed by humans
  9. What is the function of enzymes?
  10. Describe the symptoms of a person lacking in (a) Vitamin C (b) Iodine (c) Vitamin D
  11. Why are some amino acids called essential?
  12. How would you expect the alimentary canal of a dog and a koala to differ from that of a human?
  13. List the enzymes of the human digestive system and their function
  14. Explain the following:
    1. Villi are an advantage in digestion
    2. The stomach has a sphincter at each opening
    3. There are no amylases in the stomach
    4. The function of bile is ...
    5. You can swallow while standing on your head
    6. The concentration of glucose in the small intestine is lower than in the capillaries of the villi
    7. The stomach has both mechanical and chemical digestion
    8. Fibre is needed in the diet

 Extended Questions

  1. Produce a flowchart that summarises photosynthesis and respiration. Include the following terms and processes:
    2. Plants (autotrophs) Photosynthesis Hetrotrophs Respiration
    Chlorophyll, light, CO2, water Organic compounds Aerobic respiration Anaerobic respiration
    ATP Mitochondria Energy and CO2 Fermentation
    Lactic acid Ethanol Glycolysis  

     
  2. Produce a table of nutrients listing the nutrients and what they are needed for plants and another for mammals (humans).

    3.  

     

  3. Sketch a diagram of the digestive system on an A4 page. Using arrows, identify all major organs and write brief summary notes on each part.

    4.  

     

  4. A cheese sandwich contains fibre, fat, protein, carbohydrate (sucrose and starch) and water.
    1. What are the listed components broken into?
    2. Describe the passage of the cheese sandwich as it moves through the digestive tract