While examining a rock surface,you have discovered an interesting new organism.Which of the following criteria will allow you to classify the organism as belonging to Bacteria,but not Archaea or Eukarya?
A)It is unicellular.
B)Its cell walls are made primarily of peptidoglycan.
C)The organism does not have nucleus.
D)It can survive at a temperature over 100°C.

Question

Quizplus · Accepted Answer

The presence of cell walls made primarily of peptidoglycan is a characteristic trait of bacteria but not present in Archaea or Eukarya. Option A - unicellularity is not a unique feature of bacteria as many organisms in Archaea and Eukarya domains are also unicellular. Option C - absence of a nucleus can be seen in both Bacteria and Archaea. Option D - some species of Archaea are known to survive at temperatures over 100°C, so it is not a unique feature of bacteria.

While Examining a Rock Surface,you Have Discovered an Interesting New