When 10,000 Molecules of ATP Are Hydrolyzed to ADP and Pi

question 41

Multiple Choice

When 10,000 molecules of ATP are hydrolyzed to ADP and Pi in a test tube, about twice as much heat is liberated as when a cell hydrolyzes the same amount of ATP. Which of the following is the best explanation for this observation?

• A)Cells are open systems, but a test tube is a closed system.
• B)Cells are less efficient at heat production than nonliving systems.
• C)The hydrolysis of ATP in a cell produces different chemical products than does the reaction in a test tube.
• D)The reaction in cells must be catalyzed by enzymes, but the reaction in a test tube does not need enzymes.
• E)Reactant and product concentrations are not the same

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Definitions:

Further Process

The subsequent operations or steps taken to enhance or complete the production of goods.

Variable Cost Concept

The variable cost concept implies costs that vary directly with the level of production or sales volume, such as materials and labor.

Markup

The amount added to the cost price of goods to cover overhead and profit when determining the selling price.

Total Cost Concept

An approach that takes into account all costs associated with the production and distribution of goods or services.