Which organelle contains DNA and controls cell activities?

Which organelle contains DNA and controls cell activities?

• A. Nucleus
• B. Ribosome
• C. Mitochondrion
• D. Cytoplasm

Answer: (A)

The organelle that contains DNA and directs the cell’s activities is the nucleus. It houses the cell’s genetic material organized as chromosomes and is surrounded by a double membrane with pores to regulate what enters and leaves. By controlling transcription, the nucleus determines which proteins are made and when, guiding growth, metabolism, and responses to the environment. Ribosomes synthesize proteins but don’t store DNA; the cytoplasm is the space where many reactions occur and doesn’t hold genetic material; mitochondria do contain some DNA but their main role is producing energy rather than directing overall cellular activities.

The organelle that contains DNA and directs the cell’s activities is the nucleus. It houses the cell’s genetic material organized as chromosomes and is surrounded by a double membrane with pores to regulate what enters and leaves. By controlling transcription, the nucleus determines which proteins are made and when, guiding growth, metabolism, and responses to the environment. Ribosomes synthesize proteins but don’t store DNA; the cytoplasm is the space where many reactions occur and doesn’t hold genetic material; mitochondria do contain some DNA but their main role is producing energy rather than directing overall cellular activities.