Question 15

Prokaryotic cells have a capsule.

Prokaryotic cells are characterized by the presence of a capsule, which serves as a protective layer that can enhance their ability to survive in various environments.

A) Have a nucleus

This option is incorrect because prokaryotic cells do not have a nucleus. Instead, their genetic material is located in a region called the nucleoid, which is not membrane-bound.

B) Have a capsule

This option is correct as many prokaryotic cells possess a capsule, which is an outer layer that can help protect the cell from desiccation and immune responses, as well as assist in adherence to surfaces.

C) Have membrane-bound organelles

This option is incorrect because prokaryotic cells lack membrane-bound organelles. Instead, their cellular processes occur within the cytoplasm or at the cell membrane.

D) Cannot move on their own

This option is also incorrect, as many prokaryotic cells are capable of movement through various means such as flagella or pili, allowing them to navigate their environment effectively.

Conclusion

The correct answer highlights the unique feature of prokaryotic cells having a capsule, which distinguishes them from eukaryotic cells that possess a nucleus and membrane-bound organelles. All other options misrepresent the characteristics of prokaryotic cells, reinforcing the importance of understanding their structural differences.