Exploring Archaeal Diversity and Characteristics

What type of linkages are found in the membranes of Archaea?

• Ester linkages

• Ether linkages

• Peptide linkages

• Glycosidic linkages

Which of the following is a characteristic component of the cell walls of Archaea?

• Peptidoglycan

• Pseudomurein

• Cellulose

• Chitin

Which of the following phyla of Archaea is known for being mostly methanogens and anaerobes?

• Crenarchaeota

• Euryarchaeota

• Proteobacteria

• Cyanobacteria

Which of the following is NOT a notable phylum of Archaea?

• Crenarchaeota

• Euryarchaeota

• Actinobacteria

• Euarchaeota

Which genus within the Crenarchaeota phylum is known for being thermophiles and acidophiles?

• Methanobacteria

• Sulfolobus

• Halobacteria

• Thermoproteus

What is a unique feature of the Thermoproteus genus within the Crenarchaeota phylum?

• They are strict anaerobic thermophiles

• They are facultative anaerobes

• They are halophiles

• They are photosynthetic

Which of the following is a characteristic of the Euryarchaeota phylum?

• All are aquatic

• Many are hyperthermophiles

• Mostly methanogens

• All are photosynthetic

Which of the following groups is NOT part of the Euryarchaeota phylum?

• Methanobacteria

• Methanococci

• Methanomicrobia

• Cyanobacteria

What type of environment do many Crenarchaeota thrive in?

• Cold and dry

• Hot and acidic

• Salty and alkaline

• Dark and anoxic

Which of the following is true about the genomes of Archaea?

• They are smaller than bacterial genomes

• They are much larger than bacterial genomes

• They are identical to bacterial genomes

• They are composed of RNA only