7th Grade Q1, Seq 1 - How do scientists classify living things?
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| Controlled experiment | A lab investigation in which all the variables are kept the same except for the one that is changed.
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| Variables | factors in a science experiment that are changed, controlled, or measured.
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| independent variable | what the scientist manipulates or tests on purpose.
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| dependent variable | the results that are measured/observed, the outcome.
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| Constant | Factors that are controlled so that they don’t affect the dependent variable
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| field study | A scientific study of free-living plants or animals in which the subjects are observed in their natural habitat without changing, harming, or altering the setting or subject.
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| Model | A simplified representation of a system that are useful for studying systems that are too big, too small, or too dangerous to study directly.
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| Domain | the highest level of scientific classification of organisms.
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| Archaea | The domain of single-celled, prokaryotic organisms that include autotrophs and heterotrophs that are NOT bacteria.
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| Eukarya | the domain of mostly multicellular eukaryotic organisms.
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| Bacteria | the domain of single-celled organisms with prokaryotic cells that can be either autotrophs or heterotrophs and are NOT archaea.
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| Kingdom | the second highest level of scientific classification of organisms.
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| Animal | the kingdom of heterotrophs that are multicellular organisms that sexually reproduce.
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| Plant | the kingdom of multicellular autotrophs that can reproduce sexually or asexually.
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| Fungi | the kingdom of heterotrophs that can be either unicellular or multicellular and can reproduce either sexually or asexually.
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| Protist | the kingdom that includes unicellular or multicellular organisms that can be either unicellular or multicellular and can reproduce either sexually or asexually.
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| Unicellular | organisms that are made of only one cell.
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| Multicellular | organisms that are made of more than one cell.
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| Autotrophs | produce their own food for energy; use photosynthesis or chemosynthesis for energy.
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| Heterotrophs | eat other organisms to get proteins and energy.
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| sexual reproduction | reproduction that results in an offspring that is a mixture of both parents.
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| asexual reproduction | reproduction that results in an offspring identical to the parent.
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| Controlled experiment | A lab investigation in which all the variables are kept the same except for the one that is changed.
🗑
|
||||
| Variables | factors in a science experiment that are changed, controlled, or measured.
🗑
|
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| independent variable | what the scientist manipulates or tests on purpose.
🗑
|
||||
| dependent variable | the results that are measured/observed, the outcome.
🗑
|
||||
| Constant | Factors that are controlled so that they don’t affect the dependent variable
🗑
|
||||
| field study | A scientific study of free-living plants or animals in which the subjects are observed in their natural habitat without changing, harming, or altering the setting or subject.
🗑
|
||||
| Model | A simplified representation of a system that are useful for studying systems that are too big, too small, or too dangerous to study directly.
🗑
|
||||
| Domain | the highest level of scientific classification of organisms.
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