Cytoskeleton Flashcards
(14 cards)
What are the three main types of cytoskeletal components in eukaryotic cells?
Actin microfilaments, intermediate filaments and microtubules.
Fill in the blank: Microtubules are formed from __________.
tubulin dimers.
What is one primary function of actin microfilaments?
They provide structural support and enable cell movement.
Multiple Choice: Which of the following structures is primarily associated with cell protrusions?
Actin microfilaments.
True of False: hemidesmosomes are cell protrusions.
False
What is a cell junction made of?
Cell membrane of two neighboring cells, transmembrane proteins binding to each other and cytoskeletal components for support
Name an actin-based cell protrusion
Microvilli or stereocilia
Which are the steps of actin filament formation?
Nucleation, elongation and treadmilling
What are actin-associated proteins?
Proteins involved in formation and stability of actin filaments, as well as their supraorganization in 3D structures and attachment to cell membrane
What is a motor protein?
A protein associated with cytoskeleton components and involved in cellular traffic or cell movement
Is myosin an actin-associated protein?
No, it is a motor protein
Name one specific feature of intermediate filaments
Stability or cell specificity
Which are the three types of cell junctions?
tight, anchoring and communicating junctions
What is a tissue made of?
Cells and extracellular matrix, composed of secreted macromolecules
