Any living thing

He named Cells

A cell with NO nucleus or membrane-bound organelles

A cell with a nucleus or membrane-bound organelles

a group of similar cells that perform a common function

a group of similar organ systems that perform a common function

a group of similar tissues that perform a common function

a point at which the concentration is the same on both sides of a cell membrane

a constant internal state in a changing environment

the movement of particles through a cell membrane WITH the use of energy

the movement of particles through a cell membrane WITHOUT the use of energy

the movement of particles INTO a cell WITH the use of energy

the movement of particles OUT of a cell WITH the use of energy

the movement of WATER through a cell membrane WITHOUT the use of energy

the movement of molecules from an area of high concentration to an area of lower concentration