In eukaryotic cell architecture, the primary control center of the cell is the:

• A. Nucleus
• B. Mitochondrion
• C. Ribosome
• D. Golgi apparatus

Answer: (A)

Verified step by step guidance

1. Understand the role of each organelle listed in the problem: the nucleus, mitochondrion, ribosome, and Golgi apparatus.
2. Recall that the nucleus contains the cell's genetic material (DNA) and controls gene expression, thus regulating cell activities.
3. Recognize that mitochondria are primarily responsible for energy production through cellular respiration, not control of the cell.
4. Know that ribosomes are the sites of protein synthesis, translating mRNA into proteins, but they do not control the cell.
5. Identify that the Golgi apparatus modifies, sorts, and packages proteins and lipids but does not serve as the control center.