Which of the following is NOT a function of the nucleus?

The nucleus is a vital organelle within a cell, primarily responsible for managing and regulating activities crucial to cell function. One of its major roles is controlling cell activities, which involves regulating gene expression and ensuring that the correct proteins are synthesized as needed. Additionally, the nucleus plays a significant part in the manufacture of ribosomes, which are essential for protein production. It contains nucleoli, where ribosomal RNA (rRNA) is produced and combined with proteins to form ribosomes.

Facilitating cell division is another critical function of the nucleus, as it ensures that genetic material is accurately replicated and evenly distributed to daughter cells during mitosis or meiosis.

However, energy production is not a function of the nucleus. This process primarily occurs in the mitochondria, known as the powerhouse of the cell, where glucose and oxygen are converted into ATP (adenosine triphosphate), the energy currency of the cell. Therefore, the accurate identification of energy production as something that the nucleus does not do helps to clarify its specific roles in cellular functions.