Cytoskeleton: structure and function

The video uses a burrito analogy to explain the cytoskeleton's role in cell structure and function. It details the three main components: microtubules, intermediate filaments, and microfilaments, highlighting their unique roles in maintaining cell shape, stability, and movement. The cytoskeleton is likened to a dynamic network that provides structural integrity and facilitates cellular processes.

What is the primary function of the cytoskeleton in a cell?

• To produce energy

• To synthesize proteins

• To provide structure and mobility

• To store nutrients

Which protein forms the structure of microtubules?

• Keratin

• Myosin

• Tubulin

• Actin

What role do microtubules play in cell division?

• They form the spindle that helps chromosomes split

• They break down the nuclear membrane

• They provide energy for the process

• They synthesize DNA

Which class of intermediate filaments is primarily found in muscle cells?

• Keratins

• Desmin

• Neurofilaments

• Lamins

What is the main structural protein in microfilaments?

• Vimentin

• Tubulin

• Actin

• Keratin

How do microfilaments assist white blood cells?

• By providing energy

• By guiding them to infection sites

• By synthesizing antibodies

• By storing nutrients

What is the role of ATP in the function of microfilaments?

• It stores genetic information

• It provides energy for actin assembly

• It breaks down actin

• It transports proteins