What structure is responsible for cytokinesis in the human cell?Multiple Choicecell platemicrotubulescell membranecontractile ring

Break Down the Problem

1. Identify the structures involved in cytokinesis.
2. Determine the correct option related to the human cell's mechanism of cytokinesis.

Relevant Concepts

• Cytokinesis is the process during cell division where the cytoplasm of a parental cell is divided into two daughter cells.
• The structures that facilitate this process can include different cellular components.

Analysis and Detail

1. Cell Plate: This structure is prominent in plant cells during cytokinesis but is not relevant for human cells.
2. Microtubules: These play a role in the overall structure of the mitotic spindle, but they do not directly cause cytokinesis.
3. Cell Membrane: While it forms the outer boundary of the cell, it is not the structure that actively participates in cytokinesis.
4. Contractile Ring: This is formed by actin and myosin filaments and is crucial in the process of cytokinesis in human cells. It constricts the cell membrane, facilitating the division of the cytoplasm into two daughter cells.

Verify and Summarize

The contractile ring is indeed the structure responsible for cytokinesis in human cells. It helps in pinching the cell into two during the final stages of cell division.

Final Answer

The correct answer is contractile ring.