How are archaea and bacteria alike?
a. to survive, they must live in cold environments.
b. their cells are small and lack a nucleus.
c. their genetic material is similar.
d. their structure includes a cell wall.

Archaea and bacteria are similar in that their cells are small and lack a nucleus.

Further Explanation Living organisms can either be classified as prokaryotes or eukaryotes. Eukaryotes  These are organisms that contain membrane bound nucleus and membrane bound organelles such as endoplasmic reticulum, Golgi apparatus, mitochondria, etc. Prokaryotes  These are organisms that lack nucleus membrane and a nucleus together with membrane bound organelles. They include lower organisms such as bacteria and Archaea. Archaea and bacteria are examples of prokaryotes since they lack nucleus and other membrane bound organelles such as mitochondrion, endoplasmic reticulum, etc. Similarities between Archaea and Bacteria Both are prokaryotic organisms  They have ribosomes which is the site for protein synthesis  Both lack membrane-bound cellular organelles such as mitochondrion. Both archaea and bacteria have flagella Differences between Archaea and Bacteria Archaea cell wall contains  while the cell wall of bacteria contains peptidoglycan Bacteria can form spores which remain dormant for years until they get a suitable habitat for them to grow, while Archaea do not. Archaea live in extreme and harsh environments such as salt lakes, oceans,etc. while bacteria are in areas such as in the soil, organic matter, etc.

Keywords: Prokaryotes, Archaea, Bacteria

Learn more about  Archaea: Bacteria: Prokaryotes: Eukaryotes:

Level: High school

Subject: Biology  

Topic: Classification  

Subtopic: Bacteria and Archaea  

Icant be totally sure but i would say with confidence that it is example #1 about cells.