If a Cell Is Bathed in an Extracellular Solution Higher

question 129

Multiple Choice

If a cell is bathed in an extracellular solution higher in Na⁺ concentration than the cytoplasm, it will use _______ to maintain its normal intracellular concentration of Na⁺.

• A) active transport against the concentration gradient of Na⁺
• B) simple diffusion as the primary means of Na⁺ transport
• C) secondary active transport for passive diffusion of Na⁺
• D) carrier proteins to increase the rate of Na⁺ diffusion
• E) facilitated diffusion to pump Na⁺ ions out of the cell

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Definitions:

Variable Selling Costs

Costs that vary directly with the volume of units sold, such as commissions and shipping expenses.

Variable Production Costs

Expenditures that change in direct correlation with production volumes, like direct labor and raw materials used.

Absorption Costing

An accounting method that includes all direct costs and overhead costs related to the production of a specific product.

Product Costs

Expenses directly attributable to the creation of a product, including material, labor, and overhead costs.