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 |