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chapter 7 test review
everything from chapter 7.
29
Biology
10th Grade
10/07/2009

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Term
Cell
Definition
the basic unit of living organisms
Term
Hooke
Definition
discovered cells
Term
Leewenhoek
Definition
made the first microscope
Term
Schleiden
Definition
discovered that all plants have cells
Term
Schwann
Definition
discovered that all animals have cells
Term
compound light microscope
Definition
uses a series of lenses to magnify objects in steps
Term
Electron microscope
Definition
uses a beam of electrons instead of light to magnify
Term
organelle
Definition
a special structure in all cells
Term
prokaryote
Definition
when cells do not have membranes bound to organelles
Term
eurkaryote
Definition
(u carry it) cells that have membranes bound to organelles
Term
nucleus
Definition
the central membrane bound organelle that manages or controls cellular functions
Term
plasma membrane
Definition
supplies the needed nutrients for cells
Term
selective permeability
Definition
a membrane allows some molecules to pass through while keeping others out
Term
phospholipid
Definition
when a phosphate group replaces one of the fatty acids in a lipid
Term
fluid mosaic model
Definition
has phospholipids that move within the membrane, along with proteins, the proteins make the mosaic pattern
Term
cell wall
Definition
fairly rigid structure located outside the plasma membrane that provides additional support and protection
Term
nucleolus
Definition
makes ribosomes
Term
ribosomes
Definition
the site where the cell produces proteins according to the directions from the DNA
Term
cytoplasm
Definition
gelatinous fluid inside a cell
Term
nuclear envelope
Definition
made up of 2 phospholipids containing small nuclear pores for substances to pass through
Term
ER
Definition
takes care of cellular chemical reactions
Term
Rough ER
Definition
carries out the function of protein synthesis( has ribosomes)
Term
smooth ER
Definition
helps with the production and storage of lipids
Term
golgi apperatus
Definition
sorts proteins into packages and packs them into vesicles
Term
vacuoles
Definition
stores food, enzymes, and other things needed by a cell
Term
lysosomes
Definition
digest excess organelles, food, particles, and bacteria
Term
chloroplast
Definition
captures light energy and converts it into chemical energy
Term
mitochondria
Definition
membrane bound organelles in plant and animal cells that transform energy for the cell
Term
cytoskeleton
Definition
cell support structure
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