Transcript All living things are composed of cells

Warm-up
• What makes something alive?
Six Characteristics of Living Things
1. All living things are composed of cells.
2. Complex organization patterns are found in all living
organisms.
3. All organisms use energy.
4. All organisms have stable internal conditions which
must be maintained in order to remain alive.
5. All organisms grow and change.
6. All organisms reproduce in order to continue the
species’ life.
1. All Living Things are Composed of Cells
Two types of cells:
1. Prokaryotic Cells
Most are singlecelled organisms
2. Eukaryotic Cells
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Eukaryotic Cell
Prokaryotic Cell
2. Complex Organization Patterns
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Atomic Level
Molecular Level
Organelle Level
Cellular Level
Tissue Level
Organ Level
2. Complex Organization Patterns
• Organism Level
• Population Level
– Group of same species
• Community Level
– Groups of different
species
• Ecosystem Level
– Living and non-living
elements
• Biosphere Level
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Which level of organization is represented here?
Sunlight use Energy
3. All Organisms
Ecosystem
Producers
(plants and other
photosynthetic
organisms)
Heat
Chemical
Energy
Consumers
(including animals)
Heat
3. All Organisms use Energy
• Metabolism: All of the chemical reactions
that occur within an organism.
– Catabolism: Breaks larger molecules down into
smaller molecules to produce energy (i.e., Cellular
Respiration)
– Anabolism: Uses energy released by catabolic
pathways to create cellular components (i.e.,
Photosynthesis)
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4. All organisms have stable internal conditions
which must be maintained in order to remain
alive. This is called homeostasis.
Brrr….
Shiver…
I am so
cold!
37⁰C
Acceptable
Range
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5. All organisms grow and change.
a. Changes occur
during the life
cycle of an
organism.
b. Some changes
are inherited,
which over
time are called
adaptations
__________.
5a. Changes occur during an
organism’s lifetime
• Differentiation:
The process by
which cells
become
increasingly
different and
specialized
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5b. Organisms Adapt
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• The inheritance
of adaptations
over time is
evolution.
6. All organisms reproduce
1. Some organisms
reproduce sexually.
2. Some organisms
reproduce
________.
asexually
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