Question

how are organisms in the domain archaea different from those in the domain eukarya?
a. archaea hold genetic information in dna.
b. archaea are multicellular organisms.
c. archaea have mitochondria inside their cells.
d. archaea have no membranes around their organelles.

Explanation:

• Option A: Both Archaea and Eukarya hold genetic information in DNA. So this is not a difference.
• Option B: Archaea are unicellular, while Eukarya can be unicellular (e.g., yeast) or multicellular (e.g., plants, animals).
• Option C: Archaea do not have mitochondria. Mitochondria are membrane - bound organelles found in eukaryotic cells.
• Option D: Archaea are prokaryotes. Prokaryotes (including Archaea) have no membrane - bound organelles, while Eukarya (eukaryotes) have membrane - bound organelles such as nuclei, mitochondria, and chloroplasts. This is a key difference between Archaea (prokaryote - like in some cell structure aspects) and Eukarya.

Answer:

D. Archaea have no membranes around their organelles