Which of the following correctly compares and contrasts prokaryotic and eukaryotic cells?

Question

Select TWO correct answers.
A.Prokaryotic and eukaryotic cells both have an organized nucleus.
B.Prokaryotic and eukaryotic cells are both protected by a cell wall.
C.Prokaryotic and eukaryotic cells both produce proteins by using ribosomes.
D.Prokaryotic cells enclose their DNA in nuclei, while eukaryotic cells do not enclose their DNA in nuclei.
E.Eukaryotic cells enclose their DNA in nuclei, while prokaryotic cells have free-floating DNA.

Answer 1

The two correct answers are:

C. Prokaryotic and eukaryotic cells both produce proteins by using ribosomes.
E. Eukaryotic cells enclose their DNA in nuclei, while prokaryotic cells have free-floating DNA.

Here’s a brief explanation of the options:

A. False - Prokaryotic cells do not have a true organized nucleus; their DNA is not enclosed within a membrane. Eukaryotic cells do have a defined nucleus.

B. False - While some prokaryotic cells have a cell wall, not all do (e.g., animal cells, which are eukaryotic, do not have a cell wall). Prokaryotic cell walls are typically made of peptidoglycan, while eukaryotic cell walls (when present, such as in plants) are made of cellulose or chitin.

C. True - Both prokaryotic and eukaryotic cells use ribosomes to synthesize proteins.

D. False - It is the opposite; prokaryotic cells do not enclose their DNA within a nucleus, whereas eukaryotic cells do.

E. True - Eukaryotic cells have their DNA enclosed in a nucleus, while in prokaryotic cells, the DNA is found in the cytoplasm and is not enclosed by a nuclear membrane.