Of which domains are the prokaryotes members? a. archaea and bacteria b. archaea and eukarya c. bacteria and eukarya d. bacteria, eukarya, and archaea

The correct answer is- A) Archaea and Bacteria.

Carl Woese gave a three domain system of classification of living organisms in 1977. According to this system, living organisms can be divided into three domain that is-

1) Archaea- It represents the most primitive life forms ( that s the oldest species) on earth. It includes the prokaryotic organisms that survive in extreme environmental conditions ( like methanogens, thermophiles, halophiles). They have different biochemistry than bacteria and possesses distinct RNA markers.

2) Bacteria- It includes prokaryotic organisms ( that is organisms lacking true nucleus and membrane bound subcellular compartments). They contain diacyglycerol diester lipis in their membrane.

Example- Bacteria like E.coli

3) Eukarya- It includes eukaryotes ( having true nucleus and membrane bound subcellular compartments) like plants and animals.