Cells and Cell Theory

heterotrophic

• Heterotrophic organisms are those that obtain their food from other sources.
• Heterotrophic organisms can survive without any external food sources.
• Heterotrophic organisms are primarily found in aquatic environments.
• Heterotrophic organisms produce their own food through photosynthesis.

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cell theory

• Cell theory states that all cells are identical.
• Cell theory only applies to plant cells.
• Cell theory was proposed by Charles Darwin.
• Cell theory describes cells as the basic unit of living matter.

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microscope

• a tool that allows you to see enlarged images of tiny images

• A tool that allows you to see objects a long way off

• A tool used to enlarge objects

• A tool that allows you to see things under water

eukaryotic

• Eukaryotic organisms lack nuclei.
• Eukaryotic cells are always unicellular.
• Eukaryotic organisms have membrane-bound nuclei.
• Eukaryotic organisms have cell walls made of peptidoglycan.

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These are made of one cell.

• Unicellular organisms
• Bacteria
• Viruses
• Multicellular organisms

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prokaryotic

• Prokaryotic cells have a nucleus and are multicellular.
• Prokaryotic cells are always larger than eukaryotic cells.
• Prokaryotic cells can perform photosynthesis only.
• Prokaryotic cells are unicellular organisms without a nucleus.

autotroph

• An organism that consumes other organisms for energy.
• An organism that produces its own food from inorganic substances.
• A type of plant that requires sunlight to grow.
• An organism that cannot produce its own food and relies on external sources.

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multicellular

• Multicellular organisms are composed of two or more cells.

• Multicellular organisms can only exist as a single cell.
• Multicellular organisms are made of single cells.
• Multicellular organisms are always microscopic.

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organism

• A type of plant.
• A living thing

• A non-living thing.
• A concept or idea.

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cell

• the thing that everything is made of

• the basic unit of life

• the thing that we breathe

• elements

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