What characteristics do all living things share? The Six Characteristics of Living Things.
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Transcript of What characteristics do all living things share? The Six Characteristics of Living Things.
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What characteristics do all living things share?
The Six
Characteristics of Living Things
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I Am Alive!• Dog
• Flower
• Bug
• Kid
• Tree
• Man
• Cat
• Fish
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6 Characteristics of Living Things
1. All living things are organized A cell is every organism’s smallest unit of life.
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Cell:
A membrane covered structure that contains all of the materials necessary for life
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Organisms: Things that have all the characteristics of Life
• All organisms are classified as either unicellular or multicellular
– Unicellular organisms are organisms made of only one cell. Unicellular organisms have
specialized structures, much like a house has rooms for different activities.
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Multicellular
– Living things that are made of two or more cells are called multicellular organisms.
• Cells are organized into groups and have specialized functions
http://www.teachersdomain.org/resource/tdc02.sci.life.stru.different/
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6 Characteristics of Living Things
2. All living things grow and develop• A unicellular object grows as the cell
increases in size
• Multicellular organisms grow as the number of their cells increases.
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All living things grow and develop
• Changes that occur in an organism during its lifetime are called development.
• In multicellular organisms, development happens as cells become specialized into different cell types.
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6 Characteristics of Living Things
3. All living things reproduce (have babies)
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Reproduction:
• Reproduction is the process by which one organism makes one or more new organisms.
• Some organisms can reproduce without a mate by dividing and becoming two new organisms. (asexual reproduction)
• Some organisms have specialized cells for reproduction and must have a mate. (sexual reproduction)
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Asexual Reproduction:
• In Asexual Reproduction, a single parent produces offspring that are genetically identical to the parent
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Sexual Reproduction:
• In Sexual Reproduction, two parents are required to produce offspring that will share characteristics of both parents
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6 Characteristics of Living Things
4. All living things respond to stimuli in their environment
Stimulus: Change in an organism’s environment that affects the activity of an organism, organ, or tissue
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All living things respond to changes in the environment called stimuli. There
are two types of stimuli:• Internal stimuli are changes within an organism.
• Ex. Hunger, Thirst
• External stimuli are changes in an organism’s environment.
• Ex. Light, Temperature• Can you think of any other examples of stimuli in your
environment?
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6 Characteristics of Living Things
5. Maintain Homeostasis• An organism’s ability to maintain steady internal
conditions when outside conditions change is called homeostasis
• Maintaining homeostasis ensures that cells and the organism can function normally and remain healthy.
• Example: body temperature, blood sugar
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6 Characteristics of Living Things
6. All living things use energy• Cells continuously use energy to
transport substances, make new cells, and perform chemical reactions.
• For most organisms, energy for life comes from the Sun. The Sun’s energy can be passed from one organism to another.
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Energy use:
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What Did You Learn?
All living things:
• Are organized
• Grow & develop
• Reproduce (have babies).
• Respond to stimuli
• Display homeostasis
• Use energy• http://www.teachersdomain.org/resource/tdc02.sci.life.colt.alive/
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4 Needs of Living Things
1. All living things need food for energy
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Producer
• An organism that uses sunlight directly to make sugar (food)
• Example: Plants
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Consumer
• An organism that eats producers or other organisms for energy.
• Example: Animals
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Decomposer
• An organism that gets energy by breaking down the remains of dead organisms and consuming or absorbing the nutrients.
• Example: fungus
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4 Needs of Living Things
2. All living things need water
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4 Needs of Living Things
3. All living things need air
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4 Needs of Living Things
4. All living things need living space