science chapter 6 2
Terms
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- organelle
- each part of he cell with a specific job to do
- micrograph
- a photograph of the view through a microscope
- cell theory
- generalization that all living things are composed of cells, and that cells are the basic unit of structure and function in living things.
- nucleus
- houses the cells genetic material in the form of dna
- plasma membrane
- defines the boundries of the cell regulates the traffic chemicals between the cell it souroundings
- nucleolus
-
contains the part that make up organelles called ribosomes
nucleus contains a ball like mass of fibers - cytoplasm
- which consistes of various organelles suspended in a fluid
- cell wall
- protects the plant cell and maintains its shape
- prokargotic cell
- lacks a nucleus and most other organelles
- eukargotic cell
- has a nucleus surrounded by its own membrane and has other interval organelles bounded by membranes
- phospholipid bilayer
- a phospholious form tow-layer "sandwhich" of molecules
- nuclear evelope
- a pair of membranes surouneds the nucleus
- ribosomes
-
organelles work as protien
are clusters of protiens are nucleic acids assomble from components