Liters/cl/ml/dl for liquids and cubic meters/cm/mm/km for solids
Nerve cells release neurotransmitters across gaps and secretion of proteins and wastes: it’s Exocytosis
Amino acids are the monomers that make up proteins. Amino acids are made of a carboxyl group (Carbon, Oxygen, Hydrogen), an amino group (Nitrogen and two Hydrogen), and finally an R group which differs in each amino acid. That R group is what makes each amino acid different! They can also act as enzymes. Essentially enzymes act as biological catalysts and control the functions of the cell and build cells.
