All Movement,including That of Diffusing Molecules,requires a Small Expenditure of Energy;

question 31

Multiple Choice

All movement,including that of diffusing molecules,requires a small expenditure of energy; which of the following small sources of energy is most likely to make diffusion possible across the cell membrane from the cell exterior into the cell interior?

• A) Cells hydrolyze ATP to provide the energy for diffusion.
• B) A small percentage of the diffusing molecules react chemically with the membrane.
• C) Thermal energy is present in the extracellular environment.
• D) Gravity forces the molecules to move downhill.

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Definitions:

Financial Statements

Formal records of the financial activities and position of a business, person, or entity, important for decision making.

Accounting Depreciation

The systematic allocation of the cost of a tangible asset over its useful life for financial reporting purposes.

Replacement Cost

Cost to replace a firm’s assets. Also called reproduction cost.

Economic Income

The sum of a company's net cash flow and the change in present value of a company's cash flows in a given period.