Chemolithotrophs near Hydrothermal Vents Support a Variety of Life Forms

question 43

Multiple Choice

Chemolithotrophs near hydrothermal vents support a variety of life forms.Why is this analogous to photosynthetic microbes supporting life forms closer to the surface of the planet?

• A)Because all life forms need some energy source,electron source,and carbon source.Chemolithotrophs fix inorganic carbon and,if consumed by other microbes,could serve as sources for all three requirements for life.This is very similar to the role that photosynthetic microbes play in the top levels of the oceans/lakes.
• B)Because chemolithotrophs will also utilize energy from sunlight to form their sugars/get their chemical energy...much like photosynthetic microbes.
• C)Because chemolithotrophs also pull in carbon dioxide as their carbon source,just like photosynthetic microbes.
• D)Because photosynthetic microbes utilize heat energy from the sun as an energy source.Chemolithotrophs utilize heat energy from hydrothermal vents,but it's still heat energy.This makes both microbes similar.

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Definitions:

Unusual Item

A term used in financial accounting to refer to gains or losses that are infrequent or unusual in nature, not part of the company's ordinary operations.

Accounting Method

A set of rules used to determine when and how income and expenses are reported in the financial statements.

Business Segment

A distinct part of a company that can be separated for analyzing its financial performance, often by product line or geographical location.

Independent Auditor's Report

A document provided by an independent auditor as a result of an audit or evaluation of a company's financial statements, giving an opinion on the financial statements' accuracy and compliance with accounting standards.