Download Levels of organization

Levels of organization
• Subatomic particles
– electrons outside nucleus negative charge small mass
– protons in nucleus positive charge
– neutrons in nucleus no charge
• Atom(one element)
• Molecule (multiple atoms)
• Macromolecules (polymers made of monomers)
–
–
–
–
proteins made of amino acids
nucleic acids made of nucleotides
lipids made of glycerol and fatty acids
carbohydrrates made of sugars
Levels of organization continued
• Organelles (specific function “parts of
cell”)
• Cell (functional unit of life)
– plasma membrane
– cytosol + organelles = cytoplasm
• tissues (cells of one type working
together)
• organs multiple types of tissues working
together
• organ system - multiple organs with
common theme
Level of organization continued
• Organism “a living thing”
bacterium to human
• population all the members of
one species in a specific area
“pack of wolves”
• community all the organisms
within a specific area (many
species)
• ecosystem all the biotic and
abiotic components of a small
area “pond ecosystem”
Levels of organization continued
• Biomes - general areas with uniform plant
life due to levels of precipitation and
temperatures.
• Biosphere- The life supporting portion of
the earth.
– Biosphere II self contained building to make
a mini earth in a bubble.
– GAIA- Earth is like an organism with
homeostatic control “James Lovelock”
Review questions
• What is the hypothesis that treats the Earth as an
organism?
• What level of organization would a puddle in you
driveway be?
• What level is the tundra?
• What level is a colony of ants?
• What level is an enzyme?
• What level is a finger?
• What level is oxygen gas?
• What two parts of an atom are in the nucleus?