REPRODUCTION--
the process by which living things produce new living things of the same kind
there are 2 types
1) asexual reproduction--involves one parent and the offspring are identical to the parent
2) sexual reproduction--involves two parents and the offspring is a combination of both parents

EXCRETION--
the process by which living things remove waste products produced by cell activities


GROWTH--
the process by which living things increase in size or cell number


NUTRITION--
the process by which living things take in materials from its environment for growth and repair; there are 2 types
1) autotrophic nutrition--where a living thing can make its own food
2) heterotrophic nutrition--where a living thing must ingest (take in) its food


TRANSPORT--
the process by which usable materials are taken into the living thing (ABSORPTION) and distributed throughout the living thing (CIRCULATION)


SYNTHESIS--
the process by which smaller, simple substances are combined chemically to form larger, more complex substances



If a living thing has all 8 off these life functions, it is called an ORGANISM!

When we refer to all of the life functions of an organism, we are referring to its METABOLISM--the total of all the life functions required to sustain life (to stay alive)

R + R + R + E + G + N + T + S =
METABOLISM

An organism's external (outside) environment is always changing. By keeping the control and regulation of its metabolic activities, an organism can maintain a stable internal (inside) environment. This is called HOMEOSTASIS.

HOMEOSTASIS--
the process by which an organism's metabolic activities are in a state of balance
ex. body temp, blood sugar levels


The 8 Life Functions

from regentsprep.org, here is a rundown of all the life functions
some life functions listed here in this clip