The cell in the following figure is moving by producing pseudopodia.This type of movement is a result of the reorganization of a certain component of the cytoskeleton (labeled). Some of the various labeled lines in the figure show
A) microtubules elongating at the leading edge of movement.
B) microfilaments disassembling at the trailing edge of movement.
C) different types of intermediate filaments located in different parts of the cell.
D) motor proteins attached to microtubules pushing the plasma membrane forward.

Question

The cell in the following figure is moving by producing pseudopodia.This type of movement is a result of the reorganization of a certain component of the cytoskeleton (labeled).  Some of the various labeled lines in the figure show
A) microtubules elongating at the leading edge of movement. 
B) microfilaments disassembling at the trailing edge of movement. 
C) different types of intermediate filaments located in different parts of the cell. 
D) motor proteins attached to microtubules pushing the plasma membrane forward.

Quizplus · Accepted Answer

Pseudopodia movement involves the reorganization of actin filaments (microfilaments) in the cytoskeleton. As the cell moves forward, the leading edge extends by the assembly of actin and the formation of pseudopodia. At the same time, the trailing edge contracts and disassembles actin to enable the movement. Therefore, the correct option is B, which states that some of the lines labeled in the figure show microfilaments disassembling at the trailing edge of movement.

The Cell in the Following Figure Is Moving by Producing