Containing two sets of complete chromosomes

Having half the number of chromesomes

Sperm and Egg (Sex Cells)

Branching filaments that make fungus

Vegetative part of fungus 

Red Blood Cells

Red protein that make oxygen travel through the body

The tendency toward a relatively stable equilibrium

The reaction responsible for the living state of the cells and organs. 

A set of pricipanls or ideas.