what is life? levels of organization activity characteristics of living things
TRANSCRIPT
What is Life?
Levels of Organization Activity
Characteristics of Living Things
Using your books…
• Summarize the levels of organization activity by finding the chart to the right and copying levels and examples into your notes.
Brainstorm first…
• What must so-called living things do to be living?
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
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Cells
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
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Reproduction
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
Based on Genetic Code
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
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QuickTime™ and aTIFF (Uncompressed) decompressor
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Growth and Development
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
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QuickTime™ and aTIFF (Uncompressed) decompressor
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Need for Materials and Energy
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
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Response to Environment
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
Maintaining Internal Balance
What characteristics do the things in these pictures have in common?
• Notetaking Tip --- list descriptions of pictures in your notes QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.
QuickTime™ and aTIFF (Uncompressed) decompressor
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QuickTime™ and aTIFF (Uncompressed) decompressor
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Evolution
Characteristics of Living Things
• Made of cells• Reproduce• Based on a genetic code (DNA)• Grow and Develop• Need Materials and Energy• Respond to Stimuli (Environment)• Maintain an Internal Balance (homeostasis)• Evolve/Adapt over time
To clarify…
• To each characteristic add your own notes based on the in-class discussion and book reading.
To practice…
• For homework, answer the virus question. This is a good test type question to see if you know and understand the characteristics of living things!
Sample in class additional notes…
• Made of cells: Unicellular--one cell; Multicellular--many cells with different functions.
• Reproduce: Asexual--one organism makes exact copy; sexual--two organisms forms new combinations of genes.
• Based on a genetic code: DNA
Continued…
• Grow and Develop: Growth--size of cells, number of cells. Development--specialization of cells.
• Need materials and energy: Autotrophs--can convert light energy into chemical energy. Heterotrophs--get their chemical energy from other organisms.
• Respond to stimuli: ex. Plant grows towards sun. Movement fits here, but movement is NOT a characteristic of all living things!
Finished!
• Maintain and Internal Balance: Ex. Regulate temperature by sweating and shivering.
• Evolve: Changes in the genetic code create diversity among living things. In certain environments a particular trait provides and advantage and more individuals with that trait survive and reproduce. Over time, species change in response to environmental pressure.