What is the control center of the cell that contains chromosomes and directs the activities of the cell?

• A. Cytoplasm
• B. Nucleus
• C. Ribosomes
• D. Golgi Apparatus

Answer: (B)

The nucleus acts as the control center of the cell. It houses the chromosomes, which contain the cell’s genetic material in the form of DNA. This DNA provides the instructions for making proteins and regulating all cellular activities. Through gene expression and regulation, the nucleus directs when and how different processes occur, coordinating growth, response to signals, and replication. The nuclear envelope with its pores controls what enters and leaves, keeping the genetic material organized. In contrast, the cytoplasm is the site of many metabolic activities, ribosomes synthesize proteins, and the Golgi apparatus modifies and ships those proteins. So the nucleus best fits the description of the control center that contains chromosomes and directs the cell’s activities.