12 Questions
What is the function of motor proteins in cells?
Binding to a polarized cytoskeletal filament and using ATP to move along it
Which motor protein is involved in forming lateral arms linking actin to the plasma membrane?
Myosin I
What is the major function of Microtubule Associated Proteins (MAPs)?
Regulating microtubule structure and function
Where is the Centrosome, a Microtubule Organizing Center (MTOC), located?
Consists of two centrioles in a matrix of accessory proteins
Which microtubules are directly involved in the separation of chromosomes during cell division?
Kinetochore microtubules
What is a major difference between Actin Filaments and Microtubules in terms of their structure?
Microtubules have GTP/GDP bound nucleotides while Actin Filaments undergo nucleotide hydrolysis
What is the primary function of actin filaments in the cytoskeleton?
Structural support and motility
Which of the following statements about actin filaments is true?
They are polar structures
What is the primary function of the cross-linking protein fimbrin?
Organizing actin filaments into tight, parallel bundles in microspikes and filopodia
Which of the following actin networks is specialized for sensing sound in the ear?
Stereocilia
Which of the following actin gene families is primarily expressed in non-muscle tissues?
Non-muscle tissue
What is the diameter of intermediate filaments in the cytoskeleton?
10 nm
Test your knowledge on the structure and function of the cytoskeleton, a network of protein fibers in the cytoplasm that provides shape to cells, holds and moves organelles, and regulates cell movement. Learn about the characteristics and functions of actin filaments, intermediate filaments, and microtubules.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
