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chapter 7 terms
vocab chapter 7 terms
| Question | Answer |
|---|---|
| What is a cell | collection of living things basic living life |
| what is cell theory | fundamental concept of biology |
| what is nucleus | is a large membrane close strucuture that contains DNA |
| what is eukaryote | are cells that contain nuclei |
| what is prokaryote | cells that contain nuclei |
| what is organelle | little organs |
| what is cytoplasm | is the portion of the cell outside the nucleus |
| what is nuclear envelope | composed of two membranes, thousands of nuclear pores which allow material to move |
| what is chromatin | consitis of DNA bound to protein, they spread |
| what is nucleolus | it is where assembly of ribosomes begin |
| what are ribosomes | are small particle of RNA and protein found through out the cytoplasm |
| what is endoplasmic reticulum | is the site where lipid componets of the cell membrane are assembled |
| what is golgi apparatus | it is stack of closely apposed membranes |
| what is Lysosomes | are small organelles filled with enzymes |
| what is vacuoles | store materials such as water salt proteins and carbohydrates. |
| what is mitochondria | they convert the chemical energy stored in the food into compounds that are conveient for the cell to use |
| what is chloplast | are organelles that capture the energy from sunlight and convert into chemical energy |
| what is cytoskelton | is a network of protein filaments that helps the cell to maintain its shape |
| what centrioles | are located near the nucleus and help to cell divsion |
| what is a cell membrane | is sometimes called the plasma because many cells are in direct contactwith fluid portion |
| what is cell wall | many cell also produce a strong supporting layer around the membrane |
| what is lipid bilayer | 2 layers of lipids |
| what is a concentration | is the mass of solution is the mass is given |
| what is a diffusion | when the concentation of solute is the same thourgh out the system |
| what is the osmosis | is the diffusion of water through a selecively permeable |
| what is a isotonic | which means same strength |
| what is hypotomic | below strength |
| what is facilitated | cannot diffuse across the cell membrane |
| what is diffusion | 100s of protein chanels substances to cross differnent membranes |
| what is active transport | is implies active transport or small molecuels |
| whay is endocytosis | taking material into the cell by means of infolding or pockets of the cellmemrane |
| what is phagocytosis | extensions of cytoplasm surronded |
| what is exocytosis | the membrane of the cell membrane surrounding materials |
| what is cell specialzation | on figure 7-21 |
| what is tissue | is a group og similar cell a particlar function |
| what is a organ | each muscle however there is an individual cell |
| what is a oran system | a group ofspecific fuction called... |
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