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Cytoskeleton: Quiz


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Question 1: ________ - Nucleus (and Nucleolus) - Endoplasmic reticulum - Golgi apparatus - Peroxisome - Parenthesome
Cell wallVesicle (biology)Cell membraneCell (biology)

Question 2: A fourth eukaryotic cytoskeletal element, microtrabeculae, was proposed by Keith Porter based on images obtained from high-voltage ________ of whole cells in the 1970s.
Electron microscopeScanning electron microscopeGoldTransmission electron microscopy

Question 3: The cytoskeleton was previously thought to be a feature only of ________ cells, but homologues to all the major proteins of the eukaryotic cytoskeleton have recently been found in prokaryotes.

Question 4: ________/Myosin interactions also help produce cytoplasmic streaming in most cells.

Question 5: Filaments of ParM exhibit dynamic instability, and may partition plasmid DNA into the dividing daughter cells by a mechanism analogous to that used by microtubules during eukaryotic ________.
MitosisCell cycleMeiosisPreprophase

Question 6: ________ was the first protein of the prokaryotic cytoskeleton to be identified.

Question 7: During cell division, FtsZ is the first protein to move to the division site, and is essential for recruiting other proteins that synthesize the new ________ between the dividing cells.
BacteriaChloroplastCell wallCell envelope

Question 8: The cytoskeleton provides the cell with structure and shape, and by excluding macromolecules from some of the ________ it adds to the level of macromolecular crowding in this compartment.
MitochondrionCytosolMetabolismCell (biology)

Question 9: Intermediate filaments organize the internal tridimensional structure of the cell, anchoring organelles and serving as structural components of the ________ and sarcomeres.
Cell nucleusMitosisNuclear laminaNuclear envelope

Question 10: They are also important for cytokinesis (specifically, formation of the cleavage furrow) and, along with ________, muscular contraction.


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