Download Levels of Organization 5 Levels of Organization: • Cell (bone cell

Levels of Organization
5 Levels of Organization:
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Cell (bone cell)
Tissues (connective tissue)
Organs (rib)
Organ Systems (skeletal system)
Organism (human)
Cells
 Basic unit of life
 Make up all living things
Tissues
 Group of similar cells working together to perform a particular function
Types of Human Tissue
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Connective – structure and support (bones)
Epithelial – skin and lining of major organs
Muscle – movement (biceps)
Nervous – carries messages to and from the brain (nerves)
Types of Plant Tissue
 Dermal – protection and reduce water loss
 Vascular – transport water and nutrients
 Ground – storage and support and where photosynthesis takes place
Organs
 Group of tissues working together to perform a specific function
 Ex. – heart, brain, skin, leaf, stem, flower
Organ Systems
 Group of organs working together to perform a specific function.
 Allow organisms to grow, reproduce, and maintain life.
Human Organ Systems:
 Skeletal, muscular, respiratory, digestive, urinary, circulatory, immune, nervous,
reproductive.
Plant Organ Systems:
 Shoot System – leaves, stems, and flowers
 Root System – anchors plant and takes in water and nutrients
Organism
 Entire living things that can carry out all basic life processes.
 Made up of organ systems (some are single celled)
Unicellular Organisms:
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Do all the things needed for their survival within one single cell
Prokaryotes – do not have a membrane bound nucleus
Eukaryotes – have a membrane bound nucleus
Examples – amoeba and algae
Multicellular Organisms:
 Made of many eukaryotic cells working together to perform all of life’s processes
 Examples – mushroom, sunflower, human