Archaea quiz

Crenarchaeota are primarily known for their role in which type of biochemical process

• Nitrogen fixation

• Methane production

• Sulfur oxidation

• Photosynthesis

Class of Crenarchaeota that includes many thermophiles is called

• Thermoprotei

• Halobacteria

• Methanobacteria

• Acidobacteria

Which of the following genera is well-known within the Crenarchaeota phylum

• Methanococcus

• Halobacterium

• Sulfolobus

• Thermus

Euryarchaeota are best known for their role in which type of biochemical process

• Nitrogen fixation

• Methanogenesis

• Photosynthesis

• Sulfur reduction

Which of the following environments is most commonly associated with Euryarchaeota

• Acidic hot springs

• Deep-sea hydrothermal vents

• Anoxic marshes

• Polar ice caps

Which genus of Euryarchaeota is known for thriving in extremely salty environments

• Thermoplasma
• Methanococcus
• Halobacterium
• Pyrococcus

Sulfolobus is classified under which domain and phylum

• Domain: Archaea, Phylum: Crenarchaeota
• Domain: Archaea, Phylum: Euryarchaeota
• Domain: Eukarya, Phylum: Chordata
• Domain: Bacteria, Phylum: Proteobacteria

Which Sulfolobus species is often used as a model organism in extreme environment research

• Sulfolobus acidocaldarius
• Sulfolobus tokodaii
• Sulfolobus metallicus
• Sulfolobus solfataricus

What unique pigment found in Halobacterium allows it to capture light energy

• bacteriorhodopsin
• chlorophyll
• carotenoids
• phycobilins

Which of the following is a common habitat for Methanobacterium

• Extreme alkaline lakes

• Anaerobic sewage sludge

• • Hyperthermophilic hot springs

• Coastal mangroves