Which organelle is commonly referred to as the control center of the eukaryotic cell?

• A. Endoplasmic reticulum
• B. Nucleus
• C. Golgi apparatus
• D. Mitochondrion

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the role of organelles in a eukaryotic cell. Organelles are specialized structures within cells that perform specific functions necessary for the cell's survival and operation.
2. Step 2: Recall the function of the nucleus. The nucleus is often referred to as the control center of the cell because it houses the cell's genetic material (DNA) and regulates gene expression, which controls cellular activities.
3. Step 3: Compare the functions of the other organelles listed in the problem: The endoplasmic reticulum is involved in protein and lipid synthesis, the Golgi apparatus modifies and packages proteins, and the mitochondrion is responsible for energy production (ATP synthesis). None of these organelles serve as the control center.
4. Step 4: Recognize that the nucleus is unique in its ability to store genetic information and direct cellular processes, making it the correct answer to the question.
5. Step 5: Conclude that the nucleus is the organelle commonly referred to as the control center of the eukaryotic cell, based on its function and role in regulating cellular activities.