Biology key terms 3
Terms
undefined, object
copy deck
- light microscope
- microsocpe that uses a beam of light passing through 1 or more lenmicroscope that focuses ses to magnify an image
- electron microscope
- microscope that foucuses a beam of electrons on an object to form an enlarged image
- magnification
- enlargment or enlarging of an image
- resolutionn
- in microsocpes, the measure of the clarity of an image
- scanning tunneling microscope
- microscope that measures differnences in volatage of electrons leaving the surface of an object and creates a three dimesnional image of the object; can be used to study living organisms
- cell theroy
- principle that states that all organisims are made of one or more cells that arise from other cells
- cell membrane
- lipid bilayer with embedded protiens that enclose the cytoplasm; essential to a cells cytoplasm; also called the plasma membrane
- cytoploasm
- the interior of a cell
- cytoskeleton
- cytoplasmic netwrok of protien filiment that plays an essential role in the cells movement, shape, and division
- ribosome
- organelle on which protiens are made
- prokaryote
- single- celled organism without a nucleus; bacterial cell
- cell wall
- the structure that surrounds the cell membrane and provides support fo the cell
- flagellum
- threadlike structure that grows out of a cell and enables it to move
- eukaryote
- organism whose cells have a nucleus enclosed by a membrane
- nucleus
- organelle that houses the DNA of eukaryote cells
- organelle
- structure in eukaryotic cells that has a specialized function
- cilium
- in cells, one hairlike structure in tightly packed rows that are used ofr movement
- phospholipid
- lipid molecule in all membranes of a cell
- lipid bilayer
- foundation of a cell membrane;composed of two layers of phospholipids
- endoplasmic reticulum
- cell membranes in the cytolasm that transport substances made by the cell
- vesicle
- membrane enclossed sac in a cells interior
- golgi- apparatus
- organelle that packages an distributes molocules produced by a eukaryotic cell
- lysosome
- organelle in a eukaryotic cell that contains digestive enzymes
- mitochondrion
- organnele that produces much of the ATP made by the eukaryotic cell
- chloroplast
- organelle that uses ligtht energy to make carbohydrates from carbon- dioxide and water
- central vacuole
- membrane bound cavity in plant cells used for storage