Lecture 5 and 6 - Archae

Question 1

Explain how archae adapt to high saline environments

Answer 1

Archaea adapt to high saline environments by primarily preventing salt from translocating inside or through excretion. There are high levels of K and Cl to counter the presence of Na and Cl. Therefore they accumulate compatible solutes to prevent water loss.

Question 2

How do archae regulate depth in water what are they in search for?

Answer 2

Haloarchaea regulate depth in water using gas vesicles due to alteration in food or light source.

Question 3

Describe the biochemical process of methanogens

Answer 3

Methanogens are microorganisms that produce methane as a metabolic byproduct in anoxic conditions belonging to archaea. They are strict anaerobes utilising anaerobic respiration reducing sulfate and nitrate