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7th science vocab
PCCA 7th grade vocab for science midterm
| Question | Answer |
|---|---|
| smallest unit of a living thing that can preform the functions of life | cell |
| any living thing | organism |
| regulation of an organism's internal life-maintaining conditions despite changes in its environment | homeostasis |
| theory that living things can come from nonliving things | spontaneous generation |
| two-word naming system | binomial nomenclature |
| a group of similar species | genus |
| a group of similar organisms that share similar characteristics and can reproduce among themselves | species |
| ridged structure that encloses, supports, and protects the cells of plants, algae, fungi, and most bacteria | cell wall |
| protective outer covering of all cells that is made up of a double layer of fat-like molecules and regulates the interaction between the cell and the environment | cell membrane |
| cell organelle that breaks down lipids and carbs and also releases energy | mitochondria |
| small structures on which cells make their own proteins | ribosomes |
| cytoplasmic organelle that moves materials around in a cell and is made up of a complex series of folded membranes | endoplasmic reticulum (ER) |
| organelles that package cellular materials and transport them with in or out of the cell | Golgi Bodies |
| break down food molecules, wastes, and worn out cell parts | lysosomes |
| green, chlorophyll-containing plant-cell organelle that converts sunlight, carbon dioxide, and water into sugar | chloroplast |
| organelle that contains all the activities of a cell and contains hereditary material made of proteins and DNA | nucleus |
| extremely tiny piece of genetic material that infects and multiplies in host cells | virus |
| energy-requiring process in which transport proteins bind with particles and move them through a cell membrane | active transport |
| movement of substances through a cell membrane without the use of cellular energy | passive transport |
| a type of passive transport in cells in which molecules move from areas where there are many of them to areas where there are fewer of them | diffusion |
| a type of passive transport; diffusion of water | osmosis |
| process by which a cell takes in a substance by surrounding it with a cell membrane | endocytosis |
| food-making process by which plants and many other producers use light energy to produce glucose and oxygen from carbon dioxide and water | photosynthesis |
| series of chemical reactions used to release energy stored in food molecules | respiration |
| states that everything goes from order to chaos | 2nd Law of Thermodynamics |
| change in inherited characteristics over time | evolution |
| belief that God created man and this earth | creation |
| long, thin, whip-like structures of some protists that help them move through moist or wet surroundings | flagella |
| simplest for of asexual reproduction in which two new cells are produced that are identical to each other and the parent | fission |
| process in which a liquid is heated to a certain temperature to kill most bacteria | pasteurization |
| chlorophyll-containing, plant-like protists that produces oxygen as a result of photosynthesis | algae |
| short,thread-like structures that help Cilitate move and feed on bacteria | cilia |
| a temporary way of feeding using extensions of their cytoplasm called "false feet" | pseudopod |
| a many-celled organism; many are saprophytes and some are parasites | fungi |
| any organism that is made up of a fungus and either a green algae or a cyanobacterium and both organisms benifit | lichen |
Created by:
socksrocks
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