Levels of organization from an atom to biosphere

1. Levels of Biological
Organization
ADVANCED BIOLOGY

2. Life is
complex, yet it
is organized.
COMMUNITY

3. It is organized like a
complete address:
Example:
Planet - Earth
Continent - North America
Country - United States
Region - Southeast
State - Louisiana
Parish – East Baton Rouge
City- Baton Rouge
Street – Stadium Rd
Street number – 16 N
Place/side – LSU Stadium Westside
Section – 103
Row – 1
Seat - 27
COMMUNITY

5. Atom
Molecule
Organelle
Cell
Tissue
Organ
Organ System
Organism
Population
Community
Ecosystem
Biosphere
(usually lifeless but essential to
formation of life)
(mostly
living)

6. 1. Atom
Definition Examples
The smallest
unit of matter
Oxygen (O),
Helium (He)
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem >Biosphere

7. 2. Molecule
Definition Examples
Group of atoms
chemically
bonded
together
DNA,
chlorophyll,
water, salt
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem > Biosphere

8. 3. Organelle
Definition Examples
Specialized
part w/in a
cell
Chloroplast,
nucleus,
vacuole,
mitochondria
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem > Biosphere

9. 4. Cell
Definition Examples
The basic unit
of life
Nerve cell,
muscle cell,
plant cell, red
blood cell
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem >Biosphere

10. 5. Tissue
Definition Examples
Group of
specialized cells
that perform a
specific function
Muscle tissue,
skin tissue
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem >Biosphere

11. 6. Organ
Definition Examples
Group of
tissues joined
as a unit to
perform a
function
Heart, brain,
liver, skin,
kidney
Atom > Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem > Biosphere

12. 7. Organ System
Definition Examples
Group of
organs joined
as a unit to
perform a
function
Nervous
system,
circulatory
system
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere

13. 8. Organism
Definition Examples
A distinct
living thing;
classified into
unicellular or
multicellular
Human,
snake,
mushroom,
bacteria
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere

14. 9. Population
Definition Examples
A group of
organisms of the
same species
that interbreed
and live in the
same area
Coyotes in
Yosemite Nat.
Park, deer in
Sam Houston
Jones State
Park
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere

15. 10. Community
Definition Examples
The interacting,
living
populations,
that live in the
same area
All the
populations
(plants,
animals, fungi,
bacteria) in
Yosemite
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere

16. 11. Ecosystem
Definition Examples
A community of
living organisms,
and their non-
living parts of the
environment
(energy, soil, etc.)
The Yosemite
community
plus its
energy, soil,
water, etc.
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere

17. 12. Biosphere or ecosphere
Definition Examples
The zone of life
on planet Earth.
The sum of all
ecosystems and
or biomes on
Earth.
The earth’s
biosphere (it’s
the only
biosphere yet
discovered)
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem > Biosphere