Answer:
A fixed set of steps and procedures
_RER: (rough endoplasmic reticulum)
it's role is to carry the ribosomes(subunits)
_mitochondrion: gives energy for the cell for its motility
_golgi body: responsible for maturation of the protein
Answer:
He should make identical stains on T-shirts and see whether different parts of the lemon will remove the stain
Explanation: