Available Answers

1. 1.

   Define the term "Respiration".

2. 2.

   Choose the most appropriate answer from the following:

   1. Respiration can be best defined as:
      1. the taking in of oxygen by relaxation of the diaphragm and contraction of the muscles.
      2. the oxidative breakdown of food in living cells to release energy.
      3. carbon dioxide + water → glucose + oxygen.
      4. the burning of glucose by the body.
   2. The oxygen needed by a respiring cell:
      1. diffuses into the cell from the capillaries via the tissue fluid.
      2. is taken directly into the cell by the blood capillaries.
      3. is taken into the cell by the red blood corpuscles.
      4. enters the cell in the form of oxyhaemoglobin.
   3. Carbon dioxide is mainly transported in the blood:
      1. by the white corpuscles.
      2. in the form of oxyhaemoglobin.
      3. in the form of bicarbonate ions in solution.
      4. in the form of carbooxyhaeoglobin.
3. 3.

   How does breathing differ from respiration?

4. 4.

   How does cellular respiration differ from alcoholic fermentation?

5. 5.

   Write down the chemical equations indicating aerobic respiration and anaerobic respiration.

   1. Aerobic respiration:
   2. Anaerobic respiration:
6. 6.

   What is called the "currency of energy"?