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Modify / distribute proteins. Only in eukaryotes
Vesicular Transport endocytosis and exocytosis
Transport of large particles and macromolecules across plasma membranes
COPII -> FORWARD
COPI <- RETRUN
Cisternal Maturation Golgi cisternae move from the cis to the trans face, changing their
internal enzymes as they do so. When they reach the trans face, they break up into vesicles.
Vesicles travel in retrograde New Cis made Cis/Medial/Trans/Exit
Centrioles a minute cylindrical organelle near the nucleus in animal cells, occurring in
pairs and involved in the development of spindle fibers in cell division.
, Medical Biology (Semmelweis Exam )
Questions With Complete Solutions
Cell organelle that aids in cell division in animal cells only
Centrioles: 9 groups of microtubules, pull chromosomes apart.
Lysosomes cell organelle filled with enzymes needed to break down certain materials in
the cell
Uses chemicals to break down food and worn out cell parts
Demo & Recycling center. Made by Golgi. Single membrane
Plasmids Small rings of DNA found naturally in some bacterial cells in addition to the
main bacterial chromosome. Can contain genes for antibiotic resistance, or other "contingency"
functions.
small circular DNA molecules that replicate separately from the bacterial chromosome
, Medical Biology (Semmelweis Exam )
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In prokaryotes. Carry DNA not necessary for survival.
Cytoskeleton Cytoskeleton
Microfilaments Long, thin fibers that function in the movement and support of the cell
Actin
Microtubules Spiral strands of protein molecules that form a tubelike structure
Tubulin
Intermediate Filaments Threadlike proteins in the cell's cytoskeleton that are roughly
twice as thick as microfilaments
Keratin = Vimentin; Desmin = Lamin
, Medical Biology (Semmelweis Exam )
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Epithelia Tissues form a protective covering for all of the internal and external surfaces of
the body
Parenchyma (epithelial) functional parts of the organ
Simple Epithelia one layer of cells
Epithelia Stratified multiple layers
Epithelia Pseudostratified One layer (looks mult, but really just 1).
Epithelia Cuboidal cube shaped cells
Epithelia Columnar long and narrow
Epithelia Squamous flat and scale like