| A | B |
|---|
| cell | the basic unit of living organisms |
| cell theory | made up of 3 main ideas; all organisms have one or more cells,cell is basic unit, cells come from past cells |
| compound light microscope | they use a series of lenses to magnify objects in steps |
| electron microscope | uses a beam of electrons instead of natural light to magnify up to 500,000 times its actual size |
| eukaryote | cells that contain membranes |
| prokaryote | cells that do not contain membranes |
| organelles | membrane-bound structures within eukaryotic cells |
| nucleus | the central membrane-bound organelle that manages cellular functions |
| fluid mosaic model | model of the plasma membrane |
| homeostasis | the process of maintaining the cell's enviroment |
| phospholipids | lipids with a phosphate group attached to them |
| plasma membrane | the boundry between the cell and its enviroment |
| selective permeability | process in which the plasma membrane of a cell alows some molecules into the cell while keeping others out |
| transport proteins | allow needed substances or waste materials to move through the plasma membrane |
| cell wall | a fairly rigid structure located outside the plasma membrane that provides additional support and protection |
| clorophyll | traps light energy and gives leaves their green color |
| chloroplast | cell organelles that capture light energy and produce food to share for a later time |
| chromatin | strands of the genetic material,DNA |
| cilia | short, numerous, hairlike projections that move in a wavelike motion |
| cytoplasm | the clear, gelatinous fluid inside a cell |
| cytoskeleton | support structure within the cytoplasm |
| endoplasmic reticulum | the site of cellular reactions |
| flagella | longer projections that move with a whiplike motion |
| golgi apparatus | flattened system of tubular membranes that modifies the proteins |
| lysosomes | organelles that contain digestive enzymes |
| microfilaments | thin, solid protein fibers |
| microtubules | thin, hollow cylinders made of protein |
| mitochondria | membrane-bound organelles in plant and animal cells that transform energy for the cell |
| nucleolus | organelles that make ribosomes |
| plastid | plant organelle used for storage |
| ribosomes | sites where the cell assembles enzymes and other proteins according to the directions of the DNA |
| vacuole | temporary storage of materials |
