Because they are catalysts of reactions. They remain unchanged after the reaction has taken place.
Deoxyribose is found in DNA, whereas ribose is found in RNA. Deoxyribose is also a double helix while ribose is a single helix
The answer to your question is d
A scientific law is a fact that has been scientifically. A theory is "mega-hypothesis" if you will that is not yet proven, but many hypotheses of other experiments have supported. :D
True.
Nutrients allow the organism to function by giving it the energy to function and perform specific actions that are required for life.