volume_mute
Within a cell's cytoplasm are many long, thin protein fibers about six nanometers in diameter. What are these called?
publish date: 2026/06/15 06:28:29.755524 UTC
volume_mute
Inside the cytoplasm, long thin protein fibers play an important role in maintaining cell structure and enabling cell movement.
These fibers are only about six nanometers in diameter. What are they called?
Correct Answer
microfilaments
Explanation
Microfilaments are long, thin protein fibers about six nanometers in diameter found within the cytoplasm. They function in the maintenance of cell structure and movement, and are believed to be important components of contractile filaments in some cells. They may also be associated with cytoplasmic streaming — the constant movement of cytoplasm visible in many plant cells.
Reference
Biology: A Self-Teaching Guide