Question

In: Biology

archeans were first discovered A. in extreme environment B. by anton van leeuwenhoek C. inside rhe...

archeans were first discovered

A. in extreme environment

B. by anton van leeuwenhoek

C. inside rhe human belly button

D. in 1990

archeans that live around hydrothermal vents must be able to withstand extremely

A. high temperature

B. acidic water

C. basic water

D. low levels of minerals

Expert Solution

(1)

In the highest rank of organisms, a domain is a taxonomic group in the biological taxonomy. A domain is higher than a kingdom. The kingdoms of life have been grouped into three domains by Carl Woese, namely: Archaea, Bacteria, and Eukarya.

The Bacteria and Archaea domain consists of the prokaryotic organisms which do not have a nucleus and the organelles enveloped by a membrane.

Archaea were originally described and discovered in extreme environments like terrestrial hot springs, hydrothermal vents, etc. They live in a distinct range of acidic, highly saline, and anaerobic environments also.

Hence, the option (A) is correct.

(2)

Archaea were originally described and discovered in extreme environments like terrestrial hot springs, hydrothermal vents, etc. They live in a distinct range of acidic, highly saline, and anaerobic environments also.

The hydrothermal vents are created in active volcanic areas. The water of the ocean penetrates into the crust via porous rocks and cracks and is heated by underlying magma. The fluids also become more acidic and hotter in the process letting them to leach metals like lead, zinc, cobalt, iron, copper, from the surrounding rocks.

The organisms found and thrive in highly acidic conditions are known as acidophiles.

Hence, option (B) is correct.

gladiator answered 6 months ago

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