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Questions and Answers
What is the smallest unit of life classified as a living thing?
What is the smallest unit of life classified as a living thing?
Which type of organisms have bodies made up of only one cell?
Which type of organisms have bodies made up of only one cell?
Which life function involves making more of themselves?
Which life function involves making more of themselves?
In multicellular organisms, which cells are specialized to face the environment?
In multicellular organisms, which cells are specialized to face the environment?
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What term describes the scenario where different cells perform different functions in an organism?
What term describes the scenario where different cells perform different functions in an organism?
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What is the consequence of an injury to cells in a unicellular organism?
What is the consequence of an injury to cells in a unicellular organism?
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Why can't a cell in a unicellular organism attain a large size?
Why can't a cell in a unicellular organism attain a large size?
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What is a characteristic difference between the lifespan of unicellular and multicellular organisms?
What is a characteristic difference between the lifespan of unicellular and multicellular organisms?
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How does the capacity for regeneration differ between unicellular and multicellular organisms?
How does the capacity for regeneration differ between unicellular and multicellular organisms?
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What happens to a multicellular organism when some cells are injured or die?
What happens to a multicellular organism when some cells are injured or die?
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Why can a multicellular body attain a large size compared to a unicellular body?
Why can a multicellular body attain a large size compared to a unicellular body?
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Study Notes
Cell Biology
- The smallest unit of life classified as a living thing is a cell.
- Organisms with bodies made up of only one cell are classified as unicellular organisms.
Cell Specialization
- In multicellular organisms, specialized cells that face the environment are called epithelial cells.
Cellular Functions
- The life function that involves making more of themselves is called reproduction.
Cell Differentiation
- The scenario where different cells perform different functions in an organism is called cell differentiation.
Unicellular Organisms
- If a unicellular organism is injured, it can lead to the death of the entire organism.
- Unicellular organisms cannot attain a large size because their cellular processes would become inefficient due to the increased distance from the cell membrane.
- Unicellular organisms typically have a shorter lifespan compared to multicellular organisms.
Multicellular Organisms
- If some cells are injured or die in a multicellular organism, the organism can still survive due to the presence of other cells.
- Multicellular organisms can attain a large size because they can distribute their cellular processes across different cells, allowing for more efficient functioning.
- Multicellular organisms have a greater capacity for regeneration compared to unicellular organisms, as they can replace damaged or dead cells with new ones.
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Description
Learn about the differences between unicellular and multicellular organisms, focusing on their structure and functions. Explore how unicellular organisms are made up of a single cell, while multicellular organisms consist of numerous cells.
