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chapter 7

QuestionAnswer
cells the basic unit of life
nucleus enclosed structure that contains the cells genetic material that form DNA
eukaryotes cells that contain nuclei
prokaryotes cells that dont contain nuclei
organells "little organs"
cytoplasm the portion of the cell outside of the nucleus
nuclear envelope layer of two membranes that surround the nucleus at of a cell
chromosomes when a cell divides, however, contain condenses
nucleolus where the assembly of ribosomes begins
ribosomes small particles of RNA and protein found throughout the cytoplasm
endoplasmic reticulm where lipid components of the cell membrane are assembled along with proteins and other materials that are exported from the cell
golgi apparatus an organelle where proteins are moved to
lysosomes small organelles filled with enzymes
mitochondria organelles that convert the chemical energy stored on food into compounds that are more convienent for the cell to use
chloroplasts organelles that capture the energy from the sunlight and convert it into chemical energy in a process called photosynthesis
cytoskeleton structure that supports eukaryotic
centrioles located near the nucleus and help organize cell division
cell membrane when a cells body comes in contact with the fluid portion of the blood
cell wall strong layer arround the membrane
lipid bilayer double layer sheet in which a membranes composition doubles
concentration mass/volume in a solution
diffusion where particles are more concintrated
equalibrium when the concentration of the solute is the same throught the system
osmosis diffusion of water through a selectively permiable membrane
isotonic "same strength"
hypertonic "above strength"
hypotonic "below strength"
facilitated molecules cant defuse throught a cell
diffusion protein channels have been found that allow particular substances to cross different membranes
active transport materials that go in the opposite direction
endocytosis process of taking material into the cell
phagocytosis "cell eating"
pinocytosis to pinch off to form vacuoles within a cell
exocytosis membrane of the cell fuses with the cell membrane
cell specialization cells through-out an organism can develop in different ways to perform different tasks
tissue group of similar cells that perform a particular function
organ when tissues work together
organ system group of organs that work together
Created by: JessicaThaler
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