Question

which of the following statements describes microfilaments?
options:

• attach to desmosomes and resist pulling forces exerted on the cell
• none of the listed responses is correct.
• actin forms the cleavage furrow that pinches one cell into two during cell division
• determine overall shape of the cell and the distribution of organelles
• i dont know yet

Explanation:

1. Analyze each option:

• Option 1: Attaching to desmosomes and resisting pulling forces is a function of intermediate filaments, not microfilaments.
• Option 3: Microfilaments are made of actin. During cytokinesis (cell division), actin forms the cleavage furrow that pinches the cell into two, which is a correct function of microfilaments.
• Option 4: Determining the overall shape of the cell and the distribution of organelles is a function of the cytoskeleton as a whole, but more specifically, microtubules play a major role in organelle distribution, while microfilaments are more involved in cell movement, shape changes during division (like cleavage furrow), etc. So this is not the best description for microfilaments.

Answer:

C. Actin forms the cleavage furrow that pinches one cell into two during cell division (assuming the options are labeled A, B, C, D, E with the third option being C as per the order: first option A, second B, third C, fourth D, fifth E)