Archaea: Unicellular Prokaryotes

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Which of the following is a characteristic of Haloarchaea?

Found in freshwater lakes

Survive at low sodium chloride concentrations

Can only survive at high sodium chloride concentrations (correct)

Primarily found in oxygen-rich environments

What is a key characteristic of Purple phototrophic bacteria?

Primarily found in oxygen-rich environments

Contain bacteriochlorophylls and carotenoid pigments (correct)

Perform oxygenic photosynthesis

An abundant element in the lithosphere

What distinguishes Archaea from bacteria in terms of cell wall composition?

Bacteria have cell walls made from peptidoglycan

Cell wall composition is not a distinguishing factor

Archaea have cell walls made from peptidoglycan (correct)

Both Archaea and bacteria lack cell walls

Where do Free-Living Aerobic Nitrogen-Fixing Bacteria primarily populate?

'Sulfur springs' Signup and view all the answers

What is a characteristic of Proteobacteria?

Divided into 5 classes: Alpha, Beta, Gamma, Delta, Epsilon Signup and view all the answers

What distinguishes Archaea from bacteria in terms of cell wall composition?

Bacteria cell walls are made of peptidoglycan Signup and view all the answers

Where can Haloarchaea survive?

At high sodium chloride concentrations Signup and view all the answers

What is a characteristic of Proteobacteria?

They constitute the majority of known bacteria of medical, industrial, and agricultural significance Signup and view all the answers

What distinguishes Purple phototrophic bacteria?

They produce intracytoplasmic membrane systems and contain bacteriochlorophylls and carotenoid pigments Signup and view all the answers

Where do Methanogens obtain energy from?

By converting chemicals like carbon dioxide and hydrogen into methane Signup and view all the answers

Archaea: Unicellular Prokaryotes

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Questions and Answers

Which of the following is a characteristic of Haloarchaea?

What is a key characteristic of Purple phototrophic bacteria?

What distinguishes Archaea from bacteria in terms of cell wall composition?

Where do Free-Living Aerobic Nitrogen-Fixing Bacteria primarily populate?

What is a characteristic of Proteobacteria?

What distinguishes Archaea from bacteria in terms of cell wall composition?

Where can Haloarchaea survive?

What is a characteristic of Proteobacteria?

What distinguishes Purple phototrophic bacteria?

Where do Methanogens obtain energy from?

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