Introduction to Cells

Movement of molecules across a membrane with the concentration gradient without the use of chemical energy. 

Solute concentration is higher inside cell; water enters the cell

Living things that have more than one cell

Structures inside the cell that performs special functions in the cell

Solute concentration inside the cell is lower than outside; water leaves the cell

Group of similar cells living together; if one of the cells breaks away it can grow, divide, and become a new organism. 

Range at which a cell performance is stable. 

Cell enters this point when it will remain alive for awhile, but will not function properly

Living things that have one cell

The number of cells in a living thing is determined by what?

Places where the environment changes dramatically God has designed those living things to enter a

Process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell

Precise condition at which a cell functions at its best

Cells that lack a membrane around their nuclear area (ex. bacteria) 

Group of similar cells working together to form organs

Equilibrium or internal “steady state” that every living organism must maintain.

He used compound microscope to study cork; named them cells

When energy is required to move molecules against the concentration gradient (lower to higher concentration)

Cells are always in a

The use of transfer proteins to move small molecules across a plasma membrane

Cell theory states that

Process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane

Cells that have have a membrane bound nucleus (ex.plants, animals, and humans)

What is the study of cells called?

Solute concentration in cell is equal to solution outside the cell