Textbook Question
Compare bacterial cells and algal cells, giving at least four similarities and four differences.
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7. Prokaryotic Cell Structures & Functions
Prokaryotic & Eukaryotic Cells
Multiple Choice
Which of the following best describes a key difference between prokaryotic and eukaryotic cells?
A
Prokaryotic cells lack a membrane-bound nucleus, while eukaryotic cells possess one.
B
Eukaryotic cells have circular DNA, while prokaryotic cells have linear DNA.
C
Prokaryotic cells contain mitochondria, while eukaryotic cells do not.
D
Both prokaryotic and eukaryotic cells have membrane-bound organelles.
Verified step by step guidance1
Step 1: Understand the fundamental structural differences between prokaryotic and eukaryotic cells. Prokaryotic cells are generally simpler and lack certain internal structures that eukaryotic cells have.
Step 2: Recall that a key feature of eukaryotic cells is the presence of a membrane-bound nucleus, which houses their genetic material. In contrast, prokaryotic cells do not have a membrane-bound nucleus; their DNA is located in a nucleoid region.
Step 3: Evaluate the options given by comparing them to known characteristics: Prokaryotic DNA is typically circular, not linear, and eukaryotic DNA is linear, so the statement about DNA types is reversed and incorrect.
Step 4: Consider organelles: mitochondria are membrane-bound organelles found in eukaryotic cells, not prokaryotic cells, so the statement about mitochondria is incorrect.
Step 5: Recognize that only eukaryotic cells have membrane-bound organelles, while prokaryotic cells generally do not, making the statement that both have membrane-bound organelles incorrect.
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