Michigan Test for Teacher Certification (MTTC) Secondary Integrated Science Practice test

Which of the following types of organisms have cells with a nucleus?

1. Prokaryotes

2. Eukaryotes

3. Archaea

4. Bacteria

The correct answer is: Eukaryotes

The correct answer is Eukaryotes, as these organisms are characterized by the presence of a nucleus within their cells. The nucleus is a membrane-bound organelle that houses the genetic material (DNA) and is involved in processes like cell division and gene expression. Eukaryotes include a diverse range of organisms such as plants, animals, fungi, and protists. Prokaryotes, on the other hand, lack a true nucleus. Their genetic material is not enclosed within a membrane, rather it is found in a region called the nucleoid. This distinction is a fundamental characteristic that differentiates prokaryotic cells from eukaryotic cells. Both Archaea and Bacteria are types of prokaryotes. Although they are different domains of life, they share the common feature of not possessing a nucleus. The differences between these two groups mainly relate to their genetic and biochemical characteristics, but in terms of cellular structure, they both still lack a membrane-bound nucleus. Thus, Eukaryotes stand out among these options due to their cellular structure, specifically the presence of a nucleus, making this the appropriate choice. Understanding this distinction is crucial for grasping the basic principles of cell biology and taxonomy within the context of the integrated