What is the name of the microtubule-organizing center found in animal cells as an identifiable structure present during all phases of the cell cycle?

• A. Spindle.
• B. Centromere.
• C. Centrosome.
• D. Kinetochore.

Answer: (C)

Verified step by step guidance

1. Understand that the question is asking for a specific structure in animal cells involved in organizing microtubules.
2. Recall that microtubules are part of the cytoskeleton and play a crucial role in cell division, intracellular transport, and maintaining cell shape.
3. Identify the key term 'microtubule-organizing center' which refers to a cellular structure that nucleates and anchors microtubules.
4. Recognize that in animal cells, the centrosome is the primary microtubule-organizing center, present throughout the cell cycle.
5. Differentiate the centrosome from other structures like the spindle, centromere, and kinetochore, which have distinct roles during cell division.