Mitosis cannot take place bacteria because they lack ________

The correct answer is: B. Nucleus

Mitosis is a type of cell division that results in two identical daughter cells. It is a process that is essential for growth, development, and repair in all eukaryotic cells.

Bacteria are prokaryotic cells, which means that they do not have a nucleus. The nucleus is the organelle in eukaryotic cells that contains the cell’s DNA. Without a nucleus, bacteria cannot undergo mitosis.

The other options are incorrect because:

• A. Chromosomes are found in both prokaryotic and eukaryotic cells.
• C. Centrosomes are found in eukaryotic cells, but they are not essential for mitosis.
• D. Mesosomes are found in some bacteria, but they are not involved in mitosis.

In conclusion, mitosis cannot take place in bacteria because they lack a nucleus.