Fechar
what are enzymes
how much enzymes are in the body?
what are carbohydrates broken into?
what are proteins broken down into
what are lipids broken down into?
what is diffusion
what is circulation
what is your heart made out of?
what is a pacemaker
what is a defibrillator
what are hormones
what is mitochondria?
what is alveoli?
what is the largest internal organ?
what does the liver do?
