COMPREHENSIVE REVIEW OF BIOLOGICAL LEVELS OF ORGANIZATION.pdf

Different Levels of Biological Organization

1. Levels of Biological
Organization
UNIT THREE, LESSON 3.2
BY MARGIELENED. JUDAN

2. LESSON OUTLINE
Levels of Biological Organization
Characteristics of Life

3. Life is
complex, yet it
is organized.

4. It is organized like a
complete address:
(ex. BaesaAdventist
Academy, BaesaRoad,
Caloocan City, Metro
Manila, Philippines, Asia,
World, Solar System,
Milky Way, Local Group
Clusters, Local Group
Superclusters, Universe)

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

7. 1. Atom
DefinitionExamples
The smallest
unit of matter
Oxygen (O
2),
Helium (He)
Atom> Molecule > Organelle > Cell > Tissue > Organ >Organ System > Organism
> Population > Community > Ecosystem >Biosphere

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

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

10. 4. Cell
DefinitionExamples
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

11. 5. Tissue
DefinitionExamples
Group of
specialized cells
that perform a
specific function
Muscle tissue,
skintissue
Atom > Molecule > Organelle > Cell > Tissue> Organ >Organ System > Organism
> Population > Community > Ecosystem >Biosphere

12. 6. Organ
DefinitionExamples
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

13. 7. Organ System
DefinitionExamples
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

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

15. 9. Population
DefinitionExamples
A group of
organisms of
the same
species,living
in the same
area
Coyotes in
Yosemite Nat.
Park, dogsin
Baesa
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population> Community > Ecosystem >Biosphere

16. 10. Community
DefinitionExamples
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

17. 11. Ecosystem
DefinitionExamples
A community of
living organisms,
and their non-
living parts of the
environment
(energy, soil, etc.)
TheYosemite
community
plus its energy,
soil, etc.
Atom > Molecule > Organelle > Cell > Tissue > Organ > Organ System > Organism
> Population > Community > Ecosystem>Biosphere

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

19. How do we
differentiate a
living thing
from a non-
living thing?

20. CHARACTERISTICS OF LIFE
1.Chemical or Molecular
Makeup
2.Cellular Makeup
3.Growth
4.Reproduction
5.Metabolism
6.Excretion
7.Definite Form, Size, and
Lifespan
8.Sensitivity to Stimuli
9.Adaptation
10.Movement

21. 1. Chemical or Molecular Makeup
All organisms are composed of both organic (ex. DNA) and
inorganic (ex. water, acids, bases, salts) molecules

22. 2. Cellular Makeup
All organisms are composed of cells.
Two kinds of cells:
1.Unicellular or prokaryotic (w/ one cell; ex. bacteria)
2.Multicellular or eukaryotic (w/ many cells; ex. human)

23. 3. Growth
All organisms grow and increase in size and volume due to
nutrientsgained from food.
Intussusception is the growth of cells (for living things; ex.
cells dividing)
Accretion is growth without nutrient intake (for non-living
things; ex. growing rock)

24. 4. Reproduction
Organisms make offspring off their own kind.
Reproduction is essential to pass DNA to the offspring.
Sexual reproduction involves union of sex cells
Asexual reproduction does not require union of sex cells. It
is seen in lower forms of life (ex. Sponge, bacteria)

25. 5. Metabolism
Metabolism is the transformation of food to energy or vice
versa.
Organisms are classified as:
1.Autotrophs –have the ability to produce own food (ex.
plants, photosynthetic bacteria, algae)
2.Heterotrophs –cannot produce own food; depend on
other organisms for food (ex. humans, most animals)

26. 6. Excretion
All organisms remove wastes or toxic substances from the
body. (ex. Urination, lungs release CO
2)

27. 7. Definite Form, Size, and Lifespan
All organisms have definite size, form, and lifespan.
Ants are small, whales are big, and you cannot expect a
human to be as big as n elephant.
Humans cannot live for 1,000 years like trees.

28. 8. Sensitivity to stimuli
All organisms respond to their environment.
Stimuli are factors that trigger a reaction of living things.
Ex. Makahiyaplant closing, plants growing with the
direction of sunlight, a person saying “ouch” upon touching
a hot surface

29. 9. Adaptation
All organisms are able to adapt to their environment.
Ex. Body responds to heat by sweating, birds migrate in
winter, bears sleep throughout winter

30. 10. Movement
All organisms move.
Movement refers to action done by organisms.
Motile organisms can move from one place to another (ex.
jaguar, human)
Nonmotileorganisms cannot move from one place to
another (ex. plants, fungi)

31. Sources:
Science Links 7
http://www.sciencemusicvideos.com/structure-and-
function-levels-of-biological-organization-worksheet/