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33 Cards in this Set

  • Front
  • Back
organelle
tiny cell structures that carry out specific functions within the cell.
cell wall
a rigid layer of nonliving material that surrounds and protects the cells of plants and some other organisms
cell membrane
the next layer after the cell wall and controls what substances come into and out of a cell
nucleus
the center/brain of a cell
cytoplasm
the region between the cell membrane and the nucleus
mitochondria
what converts enenrgy in food molecules to energy the cell can use to carry out its function
cromatin
thin strands of genetic material in the nucleus-directs how grows and divides
nuclear membrane
a thin membrane with pores that allows certain materials to enter and exit the nucleu
nucleolus
organelle that makes ribosome
endoplasmic reticulum
passageways taht carry proteins and other materials from one part of the cell to another
ribosome
factories attached to endoplasmic recticulum to produce protiens.
golgi body
receives proteins and other newly formed materials from the nedoplasmic reticulum package them and distribute them to other parts of the cell
valcuole
storage area of food, water, waste, and other materials
lyosome
small round structures containing chemicals that break down certain minerals in the cell
prokaryote
cell with membrane and wall but no nucleus + membrane bound organells. do have ribosomes ( bacteria)
eukaryote
cell with a highly developed nucleous and organelles (plant and animal cells)
cell
the basic unit of structure and function in living things
1590
microscope was invented
simple microscoep
one lens
compound microscope
more than 1 lens
First to observe cells
robert hooke 1663
observed tiny organisms with csimple microscope
anton van leeuwenhoek
all plants are made of cells
scheleiden
all animals are made of cells
schwan
new cells are formed only from cells taht already exist
virchow
cell theory
1. all living thigs are composed of cells
2. cells are the basic units of structure and function in living things
3. all cells are produced from other cells
microscopes
necceary for he cell theory
magnification
makes things better
convex
curved shape
concave
caved in shape
magnification
1st lens * the mag. of 2nd lens
resoluion
the ability to distinguish indivisual parts. sharpness of an image
1930
electron microscopes- use a beam of electrons instead of light to produce an image. see things much smaller