A Recent Book by a Reputable Biologist Suggests There Is

question 13

Multiple Choice

A recent book by a reputable biologist suggests there is a deep,hot,acidic biosphere under the Earth's crust that may have more biomass than all life at the Earth's surface.What type of organisms would most likely be found in this deep biosphere?

• A)primitive animals
• B)primitive heat-loving plants
• C)fungi living on the detritus from above
• D)thermoacidophilic archaea
• E)viruses

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Definitions:

Fatty Acid Derivative

A compound derived from fatty acids, often involved in biological processes or used as industrial chemicals.

Polypeptides

Chains of amino acids linked together by peptide bonds, forming the basic structure of proteins.

Calcitonin

A substance secreted by the thyroid gland that plays a key role in controlling blood calcium concentrations.

PTH

Parathyroid hormone, responsible for regulating blood calcium levels.