The Hypothesis That H₂ Was a Key Electron Donor for Energy

question 26

True/False

The hypothesis that H₂ was a key electron donor for energy metabolism in primitive organisms is supported by it being such a common trophic strategy in Aquificae.

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Par Value

The face value of a bond or stock, as specified by the issuing company, which does not necessarily match the market value.

Dividends

Portions of a company's earnings distributed to shareholders, typically in cash or additional shares.

Retained Earnings

The portion of a company's profits not distributed to shareholders as dividends but instead reinvested in the business or used to pay off debt.

Par Value

The nominal or face value of a stock or bond, as stated by the issuing company.