Yeast α-Factor ATPase and MDR ATPase Are 2 Members of a Superfamily

question 18

Multiple Choice

Yeast α-factor ATPase and MDR ATPase are 2 members of a superfamily of transport proteins.Which of the following do they both actively transport?

• A)H⁺ to dissolve bone mineral
• B)Ca²⁺ into the sarcoplasm
• C)a broad group of diverse organic molecules across membranes
• D)Mg²⁺ against a concentration gradient

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Definitions:

Revaluation Surplus

Revaluation surplus is an accounting term that refers to the increase in value of an asset, recognized after its revaluation exceeds its previously recorded value.

Retained Earnings

The accumulation of a company's net profits less any dividends paid to shareholders over its lifetime, reflecting the company's reinvestment back into operations.

Plant Derecognition

Occurs when a fixed asset is removed from the financial statements because it has been disposed of, sold, or is no longer in use and does not provide future economic benefits.