Which of the following statements about bacteria and archaea is true?
Correct Answer:
Bacteria can perform photosynthesis while archaea cannot.
Rationale:
Some bacteria, such as cyanobacteria, are capable of photosynthesis, using sunlight to produce energy. In contrast, archaea do not perform photosynthesis. Instead, many archaea are extremophiles and use other chemical sources for energy (e.g., sulfur or methane).
• A is incorrect because neither bacteria nor archaea have a true nucleus; they are both prokaryotic.
• B is incorrect because both reproduce asexually, mostly by binary fission, not by spores.
• D is incorrect because bacterial and archaeal flagella are structurally different, even though they serve similar functions.
