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chapter 2 vocabulary
chapter 2 science vocabulary
| Question | Answer |
|---|---|
| living thing | organism |
| basic unit of structure and function in an organism | cell |
| single-celled organism | unicellular |
| composed of many cells that are specialized to do certain things | multicelleuler |
| a change in an organism's surroundings that cause the organism to react | stimulus |
| an action or change in behavior | response |
| mistaken idea that living things can arise from nonliving sources | spontaneous generation |
| organisms that make their own food | autotroph |
| organisms that cannot make their own food | heterotroph |
| the maintenance of stable internal conditions | homeostasis |
| process of grouping things based on their similsrities | classification |
| scientific study of how living things are classified | taxonomy |
| 2 part naming system (genus and species) | binomial nomeclature |
| classification grouping that contain similar, closely related organism.(HOMO sapien) | genus |
| group of similar organisms that can that mate with each other and produce offspring that can also mate and reproduce(homo SAPIENS) | species |
| organisms that lack a nucleus | prokaryte |
| dense area in a cell that contains nucleic acids | nucleus |
| organisms with cells that contain a nucleus | eukaryote |
| basic units of structure and function | cell |
| instruments that make smaller objects appear larger | microscope |
| widely accepted explanation of the relationship between cells and living things | cell theory |
| small structures in a cell | organelle |
| rigid layer of nonliving material that surrounds the cells of plants and some other organisms | cell wall |
| forms the outside boundary that separates the cell from its environment(controls what comes in and out of the cell) | cell membrane |
| region between the cell membrane and nucleus | cytoplasm |
| powerhouse of the cell because they convert energy in food molecules into energy the cell can use to carry out its functions | mitochondria |
| passageways carry proteins and other materials from one parts of the cell to another | endoplasmic reticulum |
| small,grain-like bodies. they are the factories to produce proteins | ribosome |
| cells mailroom. receives protein and other newly formed materials from the endoplasmic reticulum, packages them, and distributes them to other parts of the cell. | golgi body |
| captures energy from sunlight and uses it to produce food for the cell. | chloroplast |
| storage area of a cell. | vacuole |
| small, round structures containing chemicals that break down certain materials in the cell. | lysome |
Created by:
thatkid
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