CHARACTERISTICS OF CHARACTERISTICS OF LIVING THINGSLIVING THINGS

(Organisms)

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Are made up of cells

UnicellularUnicellular – organisms that are made of only one cell

MulticellularMulticellular – organisms that are made of more than one cell

ColonialColonial – unicellular organisms that live in a group

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Reproduce to produce new organisms

Sexual reproductionSexual reproduction – two cells from different individuals combine to form the first cells of a new

organism

Asexual reproductionAsexual reproduction – all or part of the organism is used to make a new organism

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Growth, Development and Aging

GrowthGrowth – some cells get larger and other new cells are added

DevelopmentDevelopment – cells and body parts becomespecialized for certain jobs

AgingAging – cells and body parts become damaged and cannot be repaired

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Obtain and Use Energy from Environment

Anabolism Anabolism – process of making complex substances from simpler substances

CatabolismCatabolism – breaking down complex substances into simpler substances

MetabolismMetabolism – sum of all of the anabolism and catabolism of an organism

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Obtain and Use Energy from Environment

AutotrophAutotroph – organism that can make its own food from it’s environment

HeterotrophHeterotroph – organism that has to obtain its energy from another organism

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CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Respond to the EnvironmentStimulusStimulus – anything in the environment that

causes a reaction from an organism

ReflexReflex – automatic response to a stimulus

BehaviorBehavior – learned or inherited response to a stimulus

CHARACTERISTICS OF LIVING THINGSCHARACTERISTICS OF LIVING THINGS

Respond to the Environment (continued)

HomeostasisHomeostasis – an organism’s response to the environment that keep conditions suitable for life

When your When your body gets toobody gets too warm due to warm due to

activity or stress,activity or stress,you will sweatyou will sweat

to cool it down.to cool it down.