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Multiple Choice
All members of the Eukarya domain have which of the following characteristics?
A
The absence of membrane-bound organelles
B
Circular DNA located in the cytoplasm
C
A cell wall made of peptidoglycan
D
A membrane-bound nucleus
Verified step by step guidance
1
Understand the question: The problem is asking for a characteristic shared by all members of the Eukarya domain. This requires knowledge of the defining features of eukaryotic cells.
Recall the key features of eukaryotic cells: Eukaryotic cells are characterized by the presence of membrane-bound organelles, including a nucleus, which houses the cell's genetic material.
Eliminate incorrect options: Analyze the provided options. The absence of membrane-bound organelles is incorrect because eukaryotic cells have membrane-bound organelles. Circular DNA located in the cytoplasm is incorrect because eukaryotic cells have linear DNA housed in the nucleus. A cell wall made of peptidoglycan is incorrect because this is a feature of prokaryotic cells, specifically bacteria.
Focus on the correct characteristic: The defining feature of eukaryotic cells is the presence of a membrane-bound nucleus, which distinguishes them from prokaryotic cells.
Conclude: Based on the analysis, the correct answer is 'A membrane-bound nucleus,' as this is a universal characteristic of all members of the Eukarya domain.