Which of the Following Statements Describes NAD⁺

question 54

Multiple Choice

Which of the following statements describes NAD⁺?

• A) NAD+ is reduced to NADH during glycolysis, pyruvate oxidation, and the citric acid cycle.
• B) NAD⁺ has more chemical energy than NADH.
• C) NAD⁺ is oxidized by the action of hydrogenases.
• D) NAD⁺ can donate electrons for use in oxidative phosphorylation.
• E) In the absence of NAD+, glycolysis can still function.

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Definitions:

Cost of Goods Sold

The direct costs attributable to the production of the goods sold by a company, including material and labor expenses.

Contribution Margin

The difference between the sales revenue of a product and the variable costs associated with producing it, used to cover fixed costs and contribute to profit.

Variable Costing

An accounting method that only includes variable production costs—costs that change with production volume—in the cost of goods sold.

Fixed Costs

Expenses that do not change with the level of goods or services produced by a business within a certain range of activity.