Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
actin filament
|
protein filament about 7 nm wide formed from a chain of globular acim molecules. A mjor costituent of cytoskeleton. Abundant in muscle cells
|
|
cell cortex
|
specialized layer of cytoplasm on the inner face of the plasma membrane. In animal cells it is an actin rich layer responsible for cell surface movements
|
|
centriole
|
short cylindrical array of microtubules, usually found in pairs at the center of centrosomes in animal cells. Also found at the base of cilia and flagella.
|
|
centrosome
|
centrally located organelle of animal cells that is the primary microtubule organizing center and acts as the spindle pole during mitosis. In most animal cells it contains a pair of centrioles.
|
|
cilium
|
hairlike extension on the surface of a cell with a core bundles of mt and capable of performing repeated beating movmt of fluid over epithelial cells
|
|
cytoskeleton
|
system of protein filaments in the cytoplasm of a cell that gives the cell shape and the capacity for directed mvmt.
|
|
dynamic instability
|
the property shown by mt of growing and shrinking repeatedly through the addition oand loss of tubulin subunits from their exposed ends.
|
|
dynein
|
member of a family of large motor proteins that undergo ATP dependent movement along microtubules. Dynein is responsible for the bending of cilia.
|
|
filopodium
|
long thin actin containing extension on teh surface of an animal cell. sometimes has an exploratory function, as in a growth cone.
|
|
flagellum
|
long, whiplike protrusion tha tdrives a cell through a fluid medium by its beating. Eucaryotic flagella are longer versions of cilia; bacteria are different and simpler.
|
|
intermediate filament
|
fibrous protein filament that forms ropelike networks in animal cells often used as a structural element that resists tension applied to teh cell from outside.
|
|
kinesin
|
one member of a large family of motor protein that uses the entergy of ATP hydrolysis to move along a microtubule.
|
|
lamellipodium
|
dynamic sheetlike extension on the surface of an animal cell, especially one migrating over a surface.
|
|
microtubule
|
long, stiff cylindrical structure, composed of the protein tubulin. Used by eucaryotic cells to regulate their shape and control their mvmt.
|
|
motor protein
|
protein such as myosin or kinesin that uses energy derived from ATP hydrolysis to propel itself along a protein filament or polymeric molecule.
|
|
myosin
|
type of motor protein that uses ATP to drive movements along actin. Forms the thick filaments of skeletal muscle. responsible for many actin based movements.
|
|
nuclear lamina
|
fibrous layer on the inner surface of the inner nuclar membrane made up of a network of intermediate filaments made from nuclear lamins.
|
|
polarity
|
refers to a structure such as an actin filament or a fertilized egg that hasa n inherent direction so that one can distinguish one end from the other.
|
|
Rho protein family
|
Family of monomeric GTPases involved in signaling the rearangement of the actin cytoskeleton
|
|
sarcomere
|
repeating unit of a myofibril in a muscle cell, about 2.5 micrometer long composed of an array of overlapping thick and thin filaments.
|
|
tubulin
|
protein from which microtubules are made.
|