Q. 3. What are the outside raw materials used by an organism?
The outside raw materials used by an organism are:
1. Carbon-based compounds e.g. carbohydrates, fats etc. which provide energy for cellular processes.
2. Water. It is the medium for all intracellular reactions and the medium in which all of the transportation of materials takes place.
3. Oxygen which is used for aerobic respiration.
4. Some other minerals are also taken from outside as raw materials like iron, sodium, phosphorus etc.