The Methanogens

question 20

Multiple Choice

The methanogens

• A) are part of the domain Archaea AND appear only in aerobic environments.
• B) oxidize hydrogen gas to produce methane AND appear only in aerobic environments.
• C) use oxygen as a terminal electron acceptor AND appear only in aerobic environments.
• D) use oxygen as a terminal electron acceptor AND oxidize hydrogen gas to produce methane.
• E) are part of the domain Archaea AND oxidize hydrogen gas to produce methane.

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Definitions:

Congestive Heart Failure

A chronic condition where the heart is unable to pump blood effectively, leading to fluid buildup and breathlessness.

Leukemia

A variant of cancer affecting blood and bone marrow, known for the overproduction of unusual white blood cells.

Bruising

The appearance of discoloration on the skin caused by bleeding underneath, typically due to trauma.

Congestive Heart Failure

A chronic condition where the heart doesn't pump blood as well as it should, leading to fluid build-up around the heart.