IS THE MAINTENANCE OF A CONSTANT
INTERNAL STATE IN A CHANGING
Balance in organisms
In unicellular organisms the cell membrane and
other parts of the cell regulate what goes
materials get in and outside the cell, while in
multicellular organisms have a system that
transport materials to cell from other place in the
How do cells exchange materials?
Passive Transport: the movement of particles across a cell
membrane without the use of energy by the cell is called
Active Transport: is the movement of particles
agains a concentration gradient and requieres
to use cell energy.
ENDOCYTOSIS AND EXOCYTOSIS
HOW DO ORGANISMS MAINTAIN HOMEOSTASIS: In
multicellular organisms, the cells must work together to maintain
homeostasis for the entire organism. Some animals adapt their
behavior to control body temperature, some trees lose all their
leaves around the same time each year..