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Ch.7 Vocab
stupid words
36
Biology
9th Grade
09/28/2009

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Term
cell
Definition
basic units of life
Term
cell theory
Definition
fundemental concept of biology
Term
nucleus
Definition
large membrane enclosed structure that contains cell genetic material in the form of DNA. Controls most of the cells activitys!
Term
Eukaryotes
Definition
are the cells that contain nuclei
Term
Prokaryotes
Definition
cells that dont contain a nuclei
Term
organelles
Definition
little organs
Term
cytoplasm
Definition
the part of a cell outside the nucleus
Term
nucleur envelope
Definition
dotted with thousand of nucleur pores which allow materical to move in and out od the nucleus
Term
chromatin
Definition
granular material u see in the nucleus
Term
chromosomes
Definition
disticnt thread like structures contain the gentetic info that is passed from one generation of cells to the next
Term
nucleous
Definition
is where the assembly of ribosmes begins!
Term
Ribosomes
Definition
are small particles of RNA and protein found in the cytoplasom
Term
endoplasmic reticulum
Definition
internal membrane system
Term
golgi apparatus
Definition
modify sort and package proteins
Term
lysosomes
Definition
small organelles filled with enzymes
Term
vacoles
Definition
store matericals such as water salt protein and carbs
Term
mitochondria
Definition
organelles that convert the chemical energy stored in food into compounds that are more conventiant 4 the cell 2 use
Term
chloroplast
Definition
organeelss that capture the energy from sunlight and convert into chemical energy
Term
cytoskelton
Definition
helps support the cell
Term
centrioles
Definition
help organize cell divison
Term
lipid bilayer
Definition
2 layers of lipids
Term
diffosion
Definition
particles move from an area that they are more concentrated in 2 an area that they are less concetnrated in
Term
equilibrium
Definition
where it is the same throught the system
Term
osmosis
Definition
water distrubution
Term
isotonic
Definition
same
Term
hypertonic
Definition
above strength
Term
hypotonic
Definition
below strength
Term
active transport
Definition
moves materical in the opposite direction
Term
endocytosis
Definition
process of taking things into the cells
Term
phagocytosis
Definition
cell eating
Term
pinocytosis
Definition
tiny pockets that fill with liquids and then pinch of 2 form vacoules
Term
exocytosis
Definition
the membrane of the vacole surronding the material fuses with the cell membrance and forcing the contents out of the cell
Term
cell specialztion
Definition
cells throught an organism can develpo in diffrent ways 2 perform diffent tasks!
Term
tissue
Definition
is a group of similar cells that perform a particular funtion
Term
organs
Definition
many groups of tissue
Term
organ system
Definition
a group of organs that work 2geter
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