Question

domains and classification
members of domain archaea and domain bacteria share many characteristics. in which two characteristics are archaea different from bacteria? select two answers.
a. habitat, because many archaea live in extreme environments that lack oxygen.
b. cell organization, because archaea are single - celled.
c. cell structures, because archaea use different types of cell walls and cell membranes
d. size, because archaea are too small to be observed without a microscope.
e. presence of a nucleus, because archaea are prokaryotic.

Explanation:

• Option A: Many archaea inhabit extreme anoxic environments, a trait distinct from most bacteria.
• Option C: Archaea have unique cell wall and membrane compositions differing from bacteria.
• Option B is incorrect because both archaea and bacteria are single-celled.
• Option D is incorrect because both archaea and bacteria are microscopic in size.
• Option E is incorrect because both archaea and bacteria are prokaryotic (lack a nucleus).

Answer:

A. Habitat, because many archaea live in extreme environments that lack oxygen.
C. Cell structures, because archaea use different types of cell walls and cell membranes