QQuestionBiology
QuestionBiology
What are the tubules and filaments that give the cell its shape?
12 months agoReport content
Answer
Full Solution Locked
Sign in to view the complete step-by-step solution and unlock all study resources.
Step 1:: The cytoskeleton is responsible for maintaining the cell's shape and structure.
It is a network of various protein fibers that extend throughout the cytoplasm.
Step 2:: There are three main types of cytoskeletal elements: microtubules, intermediate filaments, and microfilaments (actin filaments).
Step 3:: Microtubules are hollow tubes with a diameter of about 25 nanometers, made up of tubulin proteins.
They provide structural support and are involved in intracellular transport.
Step 4:: Intermediate filaments are non-contractile fibers with a diameter between microtubules and microfilaments (8 - 10 nanometers).
They provide mechanical support and maintain cell shape. There are several types of intermediate filaments, including keratins, vimentin, and neurofilaments.
Step 5:: Microfilaments (actin filaments) are thin, rod-like structures with a diameter of approximately 7 nanometers.
They are composed of actin proteins and are responsible for cell movement, cytokinesis, and maintenance of cell shape.
Final Answer
These cytoskeletal elements provide structural support, maintain cell shape, and are involved in cell movement and intracellular transport.
Need Help with Homework?
Stuck on a difficult problem? We've got you covered:
- Post your question or upload an image
- Get instant step-by-step solutions
- Learn from our AI and community of students