Multiple Choice
Which of the following is a structure common to all prokaryotic and eukaryotic cells?
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5. Cell Components
Prokaryotic & Eukaryotic Cells
Multiple Choice
Which of the following domains consists of all the organisms whose cells have true nuclei?
A
Eukarya
B
Prokarya
C
Bacteria
D
Archaea
Verified step by step guidance1
Begin by understanding the concept of a 'true nucleus'. A true nucleus is a membrane-bound structure that contains the cell's genetic material (DNA) and is found in eukaryotic cells.
Recognize the difference between eukaryotic and prokaryotic cells. Eukaryotic cells have a true nucleus, while prokaryotic cells do not. Prokaryotic cells have their genetic material in a nucleoid region, which is not membrane-bound.
Identify the three domains of life: Bacteria, Archaea, and Eukarya. Bacteria and Archaea are composed of prokaryotic cells, which lack a true nucleus.
Understand that the domain Eukarya consists of all organisms with eukaryotic cells, meaning they have a true nucleus. This includes animals, plants, fungi, and protists.
Conclude that the domain Eukarya is the correct answer, as it encompasses all organisms whose cells have true nuclei.
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