Chapter 7 sec 1 & 2 Vocab Flashcards
can magnify up to 1500 times, series of lenses to magnify objects in steps
Compound Light Microscope
basic units of living organisms -
cells
made up of three ideas:
- all organisms are composed of one or more cells
- the cell is the basic unit of structure and organization of organisms
- all cells come from preexisting cells
Cell Theory
uses a beam of electrons instead of light to magnify structures up to 500,000 times their actual size -
electron microscope
small, specialized structures
organelles
organisms that do not have membrane bound organelles -
prokaryotes
multicellular organisms that are made up of eukaryotic cells -
eukaryotes
the central membranebound ogranelle that manages or controls cellular functions -
nucleous
flexible boundary between the cell and its environment
plasma membrane
process in which a membrane allows some molecules to pass through while keeping others out
selective permeability
has a glycerol backbone, two fatty acid chains, and a phosphate group
phospholipid
the model of the plasma membrane
fluid mosaic model
move needed substances or waste materials through the plasma membrane
transport proteins