Metabolism is the term used for all the chemical reactions that happen inside an organism's body.
We can show the possible reactions of any substance in a cell in a diagram. These are useful because they are a visual reminder of all the metabolic processes that occur.
Glucose is made by plants during photosynthesis. Plants are then able to make larger, more complex molecules with glucose.
This diagram shows the metabolism of glucose in plants after it has been produced during photosynthesis.
It shows that glucose is used:
Plants are also able to breakdown the larger, more complex molecules they have made to make glucose. This diagram shows the metabolism of glucose in plants - how glucose can be made from starch, lipids and amino acids, and is used in the process of respiration.
Animals obtain glucose in their diet. During metabolic reactions, animal cells use glucose:
All cells require glucose for respiration. Animals can convert glycogen into glucose when they need a short term supply of energy and they have run out of glucose. After animals have broken down all its glycogen, they will breakdown lipids and then proteins to supply the glucose needed for respiration.