Question 1

Prokaryotic cells typically have a capsule.

Prokaryotic cells are known for having a capsule, which is a protective layer that surrounds the cell wall and helps in preventing desiccation and evading the immune response.

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 prokaryotic cells often possess a capsule, which serves various functions such as protection against phagocytosis and aiding in adherence to surfaces.

C) Have membrane-bound organelles

This choice is incorrect because prokaryotic cells lack membrane-bound organelles. They have simpler cell structures compared to eukaryotic cells, which do contain organelles like mitochondria and endoplasmic reticulum.

D) Cannot move on their own

This option is also incorrect as many prokaryotic cells have the ability to move independently through various means, such as flagella or other motility structures.

Conclusion

The characteristic of having a capsule is definitive for many prokaryotic cells, distinguishing them from eukaryotic cells, which do not have this feature. Other options are incorrect as they misrepresent the fundamental characteristics of prokaryotic cells, highlighting the importance of understanding cellular structure in biology.