Question

question:
what is the main difference between a prokaryotic cell and an eukaryotic cell?
○ prokaryotic cells have many organelles, each with their own specialized functions.
○ only eukaryotic cells have its genetic material surrounded by a membrane.
○ only prokaryotic cells have vacuoles.
○ eukaryotic cells are smaller than prokaryotic cells.

Explanation:

• Analyze each option:
• Option 1: Prokaryotic cells have few organelles (no membrane - bound organelles), while eukaryotic cells have many specialized organelles. So this is incorrect.
• Option 2: Prokaryotic cells have genetic material (nucleoid) without a membrane, while eukaryotic cells have a nucleus (genetic material surrounded by a nuclear membrane). This is correct.
• Option 3: Both prokaryotic and eukaryotic cells can have vacuoles (e.g., plant cells - eukaryotic - have large vacuoles, some prokaryotes may have small vacuoles). So this is incorrect.
• Option 4: Prokaryotic cells are generally smaller than eukaryotic cells. So this is incorrect.

Answer:

B. Only eukaryotic cells have its genetic material surrounded by a membrane.