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36 Cards in this Set
- Front
- Back
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cell |
the basic unit of structure and function in an organism |
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unicellular |
single-celled organisms |
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multicellular |
organisms composed of many cells that are specialized to do certain tasks |
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stimulus |
changes in temperature, light, sound, and other factors |
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response |
an action or change in behavior |
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development |
the process of change that occurs during an organism's life |
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reproduction |
the ability to reproduce, or produce offspirng |
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spontaneous generation |
a wrong idea that living things can come from nonliving sources |
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the needs of living things |
water, food, living space, health |
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autotrophs |
self-feeders, they make their own food |
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heterotrophs |
get their energy from feeding on others |
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homeostasis |
the maintenance of stable internal conditions |
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classification |
grouping things based on their similarities |
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taxonomy |
the study of how living things are classified |
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binomial nomenclature |
the naming system developed bu Linnaeus that includes 2 parts |
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genus |
a group or classification that contains similar, closely related organisms |
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8 classification levels |
Domain, Kingdom, Phyla, Class, Order, Family, Genus, Species |
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prokaryotes |
organisms with no nucleus |
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nucleus |
a dense area in a cell that contains the chemical instructions for the cell |
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microscope |
an instrument used to make small objects look larger |
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cell theory |
all living things have cells cells are the basic unit of structure and function in living things all cells are produced from other cells |
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magnification |
the ability to make things look larger than they are |
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resolution |
the sharpness of an image |
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electron microscope |
uses a beam of electrons instead of light |
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organelles |
smaller structures inside a cell that have a job to do |
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cell wall |
a rigid layer of nonliving material that surrounds the cells of plants and other organisms |
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cell membrane |
forms the outside boundary that separates the cell from its environment |
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nuclear envelope |
protects the nucleus |
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chromatin |
strands that contain genetic material |
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ribosomes |
where proteins are produced |
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cytoplasm |
the area between the cell membrane and the nucleus |
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endoplasmic reticulum |
passageways that carry proteins and other things from one part of the cell to another part |
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golgi bodies |
receive proteins, packages them, and sends them to other parts of the cell |
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chloroplasts |
take energy from the sun to make food for the cell |
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vacuole |
storage area of cells |
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lysosomes |
small and round, have chemicals that break down materials in cells |
