Those archaea inhabiting moderate condition are called…….
a) extremophobic
b) extremophile
c) methanogens
d) all of these
Extremophile archaea are further classified into……..
a) hydrophiles
b) halophiles
c) thermophiles
d) both b and c
Explanation: halophiles live in high salt environment like salt lake and dead sea and thermophiles lives in hot environment as 90 C hot springs
Some extreme thermophiles are found forming dense communities in boiling water……..°C.
a) 90
b) 100
c) 109
d) 121
Methanogen archaea live in……..
a) aerobic environment
b) very hot environment
c) anaerobic environment
d) very cold environment
Explanation: they use CO2 to oxidize hydrogen releasing methane as waste
Which of the following is not a domain in the three domain classification system?
a) archaea
b) prokaryotae
c) eubacteria
d) eukarya
Bacteria:
