[Campbell Biology P.166] According to Figure 6.26 and the accompanying text, which of the fo... | Practice Question

According to Figure 6.26 and the accompanying text, which of the following cellular processes is not primarily driven by the interaction of actin filaments and myosin motors?

  • A: Muscle cell contraction.
  • B: Amoeboid (crawling) movement.
  • C: Cytoplasmic streaming in plant cells.
  • D: Maintaining the fixed position of the nucleus within a cell.

Explanation

The text explicitly states that 'Intermediate filaments are especially sturdy and play an important role in reinforcing the shape of a cell and fixing the position of certain organelles. For instance, the nucleus typically sits within a cage made of intermediate filaments.' This function is attributed to intermediate filaments, not actin/myosin interactions.