Transcript Levels of organization

Levels of Organization from smallest to
largest
Subatomic
particles
organ
Organ system
biosphere
atom
tissue
organism
molecules
cell
population
biome
macromolecules
organelles
community
ecosystem
• From simplest to most complex:
– Subatomic particles
– Atom
– Molecule
– Macromolecule
– Organelles
– Cell
– Tissue
– Organs
– Organ system
– Organism
– Population
– Community
– Ecosystem
– Biomes
– Biosphere
• Subatomic particles
– electrons outside nucleus;
negative charge; small mass
– protons in nucleus positive
charge
– neutrons in nucleus no charge
involved in
• Energy transformations,
• Radioactivity, subatomic reactions and
particle formation
ATOMS
• Smallest
part of matter
• NON-living
•The basic building
blocks of all matter,
living and non-living
• EX: Hydrogen, Oxygen,
Nitrogen…
Molecules
• 2 or more bonded atoms
• Form compounds
• EX: H2O, CH4 , Acids, Salts,
Alcohols, Amino Acids
• NON-living
Macromolecule
• Large network of molecules
• Proteins, fats, carbohydrates, nucleic acids
• NON-living
Organelles
• “Tiny
organs” made of
macromolecules
• Organelles: specific function
“parts of cell” - transfer of
materials across membranes,
photosynthesis, oxidation
• EX: nucleus, ribosome,
lysosome
Cell
• Made
of organelles
• Cell: smallest functional unit of life
• EX: neurons(brain cells), lung cells, cardiac cells
(heart cells)
• LIVING
Tissue
• Cells of one type working together
• Specialization in performance of one
function for the benefit of entire organism
Organs
• Multiple types of tissues that
work together
• Ex – Brain, lungs, heart
• Living
Organ System
• Multiple organs
with common theme
EX: nervous system
(brain, spinal cord
and nerves)
Organism
• Entire
living things
(organisms)
• Usually made of systems
• May be a single cell
• Living
Population
• Same
type of
organism living
together
• All the
members of one
species in a
specific area
• EX: “pack of
wolves”
Community
• All the organisms within a specific
area: many species
• Population interact
Ecosystem
• A biotic
(living) community plus the
abiotic (nonliving) features
Biotic: living
Abiotic: nonliving
Biome
• General areas with uniform plant life due
to levels of precipitation and temperatures.
Biosphere
• Whole
living layer around the globe
• Includes abiotic features
http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html
https://www.youtube.com/wat
ch?v=28ueTHq_fLw
Review questions
• What level of organization would a puddle in your
driveway be?
• What level is the tundra?
• What level is a colony of ants?
• What level is a protein?
• What level is a finger?
• What level is oxygen gas?
• What two parts of an atom are in the nucleus?
Review questions
• What level of organization would a puddle in your
driveway be? Ecosystem
• What level is the tundra? Biome
• What level is a colony of ants? Population
• What level is a protein? Macromolecule
• What level is a finger? Organ System
• What level is oxygen gas? Atoms
• What two parts of an atom are in the nucleus?
Protons and Neutrons
Question 1
• Which of the following is defined as “the
living part of an ecosystem?”
A. biosphere.
B. community.
C. organism.
D. population.
E. ecosystem.
Question 2
• Which of the following is defined as “group
of individuals of a particular type that live
in the same area and actively interbreed
with one another?”
A. ecosystem.
B. community.
C. population.
D. organism.
Answers
Question 1: B. community.
Question 2: C. population.