Examlex
A weak entity has a primary key that is partially or totally derived from the parent entity in the relationship.
Peristalsis
A sequence of muscular waves that propel food along the digestive system.
Chemical Digestion
The process in the digestive system where enzymes break down food into small molecules the body can absorb.
Diffusion
Tendency for solute molecules to move from an area of high concentration to an area of low concentration in solution; the product of the constant random motion of all atoms, molecules, or ions in a solution.
Active Transport
The process where molecules travel through a cellular membrane from an area of lesser concentration to an area of greater concentration, necessitating the use of energy.
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