Chitin - part of insects hard body and part of fungus
Cellulose - part of plant cell walls
Pectin - also part of plant cell walls
False. It is magnetism. Magnetic domain is rather a region within a magnetic material in which the magnetization is in a uniform direction.
It can be turned into chemical energy as food and then to mechanical energy by the thing receiving the chemical energy.
Answer:
The main organelle involved in respiration is the mitochondria. It's known as the powerhouse of the cell due to the fact that 32 ATP are created from this organelle.