Questions: The thinnest cytoskeletal structures, responsible for cellular locomotion and intracellular movements during cell division are: microtubules lysosomes microfilaments intermediate filaments

The answer is the third one: microfilaments.

Explanation for each option:

1. Microtubules: These are thicker cytoskeletal structures that play a role in maintaining cell shape, enabling intracellular transport, and separating chromosomes during cell division. They are not the thinnest structures.
2. Lysosomes: These are membrane-bound organelles that contain digestive enzymes. They are involved in breaking down waste materials and cellular debris, not in cellular locomotion or intracellular movements.
3. Microfilaments: These are the thinnest cytoskeletal structures, composed of actin. They are crucial for cellular locomotion, muscle contraction, and intracellular movements during cell division.
4. Intermediate filaments: These are cytoskeletal components that provide mechanical support for the cell and help maintain its shape. They are thicker than microfilaments and are not primarily responsible for cellular locomotion or intracellular movements.

Summary: Microfilaments are the thinnest cytoskeletal structures responsible for cellular locomotion and intracellular movements during cell division.