Download Levels of Organization of Life

9/8/2015
Levels of
Organization of
Life
Levels of Organization
 There
are many examples of levels of organization
that relate to the real world. Please provide one.
 Place the following levels in order:
Ecosystem
Atoms
Community
Molecule
Population Cell
Organism
Biosphere Organ
Organ system Organelle Macromolecule
Biome
Tissue
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NON
LIVING
L
I
V
I
N
G
Levels of Organization
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ATOMS
• Smallest part of matter
• NON-living
Molecules
• 2 or more bonded atoms
• Form compounds
• NON-living
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Biomolecule/Macromolecule
A very large molecule made by
joining hundreds of molecules.
Organelle
Compartments that may be
surrounded by membranes. Each
carries out a specific function
inside the cell.
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Cell
Smallest functional unit of life,
composed of organelles.
Tissue
A group of cells that work
together to perform a specific
function.
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Organ
One or more tissues working as
functional unit.
Organ System or Body System
Two or more organs that work
separately but are integrated to
perform a specific task.
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Organism
Individual living thing, made of
cells, tissues, organs, organ
systems.
Population
Group of organisms of one type that live in
the same area
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Community
Populations that live together in a defined
area
Ecosystem
Communities and its non-living surroundings
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Biosphere
Part of the Earth that contains all
ecosystems.
Which of these organisms has the same
levels of organization as we do?
Bacteria Cell = Single Cell
Plants = Multicellular
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What does it mean to be “living”?
•
•
•
•
•
Growth and development
Reproduce – asexual and sexual
Adapt to their environment. They evolve.
Cells. All living things are made of Cells.
Energy. All living things require energy.
–Metabolism: the sum of all chemical activities
in an organism.
• Stimulus. All living things respond to a stimulus.
• Homeostasis: All living things maintain an
internal balance known as homeostasis.
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Unicellular and Multicellular
Organisms
Unicellular Organisms
Multicellular Organisms
• One celled organisms
that perform all cell
functions within that one
cell.
• Prokaryotes and
Eukaryotes
• Organisms that consists of more
than one cell.
• Eukaryotes
Cell Theory
1.
All living things are
composed of cells.
2. Cells are the basic
unit of structure and
function of living
things.
3. New cells are
produced from
existing cells
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Cells are divided into two groups.
Eukaryote: contains a nucleus
in which their genetic material
is separated from the rest of
cell by nuclear membrane.
“Eu knew it has a nucleus.”
Prokaryote: have genetic
material that is not contained
in a nucleus. “Pro no”
No nucleus. Single cell
organism.
Prokaryotes and Eukaryotes
Prokaryotic Cell
Eukaroytic Cell
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Euglena = Protista
Bacteria
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