24 terms

Characteristics of Living Things2

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Unicellular
single- celled organism Ex.Bacteria & Protist
Multicellular
many celled organism Ex. Fungi, Plants, Animals
Stimulus
anything that causes a reaction or change in an organism
Response
the reaction to the stimulus
Homeostasis
maintaining stable internal conditions
Sexual Reproduction
2 parents- produces offspring that share traits from both parents
Asexual Reproduction
1 parent- identical offspring; ex: budding, regeneration, binary fission
Autotroph
organisms that make their own food Ex. Plants
Heterotroph
organisms that consume other things for food Ex. Animals
Growth
to get bigger
Development
change form or become more complex
DNA
code of life - instructions for a living thing (made of nucleic acid)
Cell
basic unit of all living things
Organism
A living thing
Needs of Living Things
Water, Food, Living Space, Homeostasis
spontaneous generation
theory that believed organisms could produce by nonliving things...proved wrong by Redi and Pasteur
decomposer
absorb nutrients and breakdown dead organisms
scavenger
eat dead organisms
producer
can make their own food from the sun (photosynthesis)
consumer
consume other consumers and producers
biotic
living
abiotic
not living
cellular organization
cells, tissues, organs, organ system, organism
chemicals of life
nucleic acids, lipids, proteins, carbohydrates, water (most abundant)
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