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chapter 7

QuestionAnswer
cells basic units of life
cell theory fundamental concept of bioligy
nucleus contains the cells genetic material
eukaryotes cells that contain neuclei
prokaryotes cells that dont contain neuclei
organelles little organs
cytoplasm portion of cell that is outside the neucleous
nuclear envelope surrounds the neucleous
chromatin consists of DNA bound to protein
chromosomes contain genetic info
nucleolus where the assembly of ribosomes begins
ribosomes small particles or RNA and protine
endoplasmic reticulum synthesises lipids
golgi apparatus modify and package protines
lysosomes small organelles filled with enzymes
vacuoles store water salts and proteins
mitochondria convert chemical energy to convenient for the cell to use
chloroplasts capture the suns energy and convert it to chemical energy
cytoskeleton helps support the cell
centrioles help organize the cell
cell membrane surrounds the cell
cell wall protects plant cells
lipid bilayer forms a strong barrier between the cell and its surroundings
concentration mass of solute
diffusion when the consintration of the solute is the same throughout the system
equilibrium after diffution
osmosis when water travles through a semipermiable membrain
isotonic same strength
hypertonic above strngth
hypotonic below strength
facilitated deffusion helps the diffusion of glucose
active transport requires energy to transport stuff
endocytosis taking material into the cell by means of infoldings or pockets
phagocytosis extensions of cytoplasm
pinocytosis pockets from along the cell membrane fill with liquid and pinch off to form vacuoles within the cell
exocytosis the membrane fuses with the cell membrane forcing the contents out of the cell
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 functions
organ many groups of tissues work together to form organs
organ system group of organs that work together to perform a specific function
Created by: tim33333
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