The Archaea Known as Halophiles

question 33

Multiple Choice

The archaea known as halophiles

• A) require temperatures above 45∘C to survive.
• B) require salt concentrations of 9% or greater to survive.
• C) are members of the phylum Euryarchaeota.
• D) are members of the Euryarchaeota and require temperatures above 45∘C.
• E) are members of the Euryarchaeota and require salt concentrations above 9%.

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Definitions:

Geometry

The branch of mathematics that deals with the properties and relationships of points, lines, surfaces, and solids.

Alkene

Organic compounds that differ from alkanes by having at least one double bond between carbon atoms, making them unsaturated.

Heat Of Hydrogenation

The heat of hydrogenation is the change in enthalpy that occurs when an unsaturated compound reacts with hydrogen to become saturated, used as a measure of the stability of the compound’s double bonds.

Alkene

A hydrocarbon compound characterized by the presence of at least one carbon-carbon double bond, playing a vital role in organic chemistry.