If the cells stop dividing and do not spread, the tumor is benign
Number 5 would be the best awnser.
As a scientist who remains impartial can more accurately conclude his data while doing experiments.
If your body lacks enzymes that break down carbohydrates, it would be unable to get sugar molecules for energy production. If you lacked the enzyme to digest proteins, you may not absorb enough amino acids?
Nervous tissue is made up of neurons and supportive cells. Throughout the human body the neurons carry electrical and chemical signals, while nutrition is provided by the supportive cells.