In cell biology, what is a large double-membraned organelle that is sometimes referred to as the ‘central unit’ of the cell because it contains the chromosomes that bear genetic material?

Nucleus

The correct answer is Option (2)- Nucleus

The large double-membraned organelle in cell biology that is sometimes referred to as the 'central unit' of the cell because it contains the chromosomes that bear genetic material is the Nucleus.

Explanation:

• The nucleus is a membrane-bound organelle found in eukaryotic cells. It is often considered the control center or "brain" of the cell due to its role in storing and processing genetic information.
• The nucleus is enclosed by a double membrane known as the nuclear envelope, which contains nuclear pores that control the entry and exit of molecules.
• Inside the nucleus, there is genetic material in the form of chromosomes. Chromosomes carry genes, which are segments of DNA that encode the instructions for building and maintaining the organism.
• The information stored in the nucleus is critical for the cell's functions, including growth, development, and the synthesis of proteins.

The other organelles mentioned (peroxisome, mitochondrion, lysosome) have different functions within the cell, but the nucleus is specifically associated with the storage and processing of genetic material.