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Science 17 and 18
science
| Question | Answer |
|---|---|
| cell | most basic unit of all living things |
| function | a job that an organ does |
| Ribosome and mitochonderia are types of... | organelles |
| eukaryote | organism that has a nucleus |
| tissue | group of cells that work together to perform a function |
| cell wall | only found in plant cells it keeps the cell together |
| organ | group of tissues that perfrom a specific function |
| What are the benefits of being multi-cellular | longer life, larger siaze, and specialized cells |
| nucleus | in a eukaryotic cell it is where the DNA is kept |
| What are the three parts of cell theory... | 1. all cells come from others cell 2. all living things are made from cells 3. cells are basic unit of life |
| what does the surface area-to-volume ratio of cell limits... | size of cell |
| what are the 4 levels of living things... | cells,tissues, organs, organ systems |
| cytoskeleton | web of proteins in cytoplasm that keeps the cell membrane from collapsing |
| Endoplasmic Reticulum | makes proteins and other materials |
| Golgi Comlplex | packageas and transprts things in and out of the cell |
| Do all organisms have organ systems? | no |
| osmosis | like diffusion except it deals with only water |
| diffusion | the proccess where molecules move from high concentration to low concetration areas |
| feedback mechanism | cycle of events where the step is controlled by info fromt the previous step |
| cellular respiration | oxygen is used to break down food |
| fermintation | no oxygen is used to break down food |
| The proccess where particles move through a membrane from a region of high concentration to a region of low concentration is... | active transport |
| Are exocytosis and endocytosis examples of active transport or passive transport? | active transport |
| What structures are needed for photosynthesis to occur? | chloroplasts |
| cellular respiration what is needed for it to occur? | mitochonderia |
| What are the three phases of the eukaryotic cell cycle? | interphase, mitosis, cytokinesis |
| chlorophyll | traps light and is used to produce food for plants |
| chloroplasts | food for plants is made here |
| Chromosomes | guidlines for what the cell should do. Part of the DNA |
| ER | makes lipids etc. |
| Lysosome | breaks down food |
| Ribosomes | make proteins and are found on the outside of half of the ER |
Created by:
numnum
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