An Organism Gains Energy Using H₂ as an Electron Donor

question 26

Multiple Choice

An organism gains energy using H₂ as an electron donor and sulfate as an electron acceptor.This organism is categorized as an

• A) aerobic lithotroph.
• B) anaerobic lithotroph.
• C) aerobic organotroph.
• D) anaerobic organotroph.

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Definitions:

Depreciation Expense

The systematic allocation of the cost of a tangible asset over its useful life, reflecting the loss in value as it ages, used for accounting and tax purposes.

Cash Coverage Ratio

A financial metric that measures a company's ability to pay off its debt obligations with its operating cash flow. It is an important indicator of financial health.

Debt-Equity Ratio

A marker indicating the relative financing tactics of using debt and equity in company assets.

Return On Assets

A financial ratio indicating the profitability of a firm relative to its total assets, demonstrating how efficient a company is at using its assets to generate earnings.