Which of the Following Sequences Describes the Path by Which

question 60

Multiple Choice

Which of the following sequences describes the path by which electrons travel downhill energetically in aerobic respiration?

• A) glucose → NADH → electron transport chain → oxygen
• B) glucose → pyruvate → ATP → oxygen
• C) glucose → pyruvate → electron transport chain → NADH → ATP
• D) food → glycolysis → citric acid cycle → NADH → ATP

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Definitions:

Contribution Margin Per Unit

The selling price of a product minus its variable costs, representing the amount each unit contributes to covering fixed costs and generating profit.

Sales Revenue Per Unit

The amount of money generated from selling one unit of a product, before any expenses are subtracted.

Variable Cost Per Unit

The cost associated with producing one additional unit of a product, which varies with the level of production.

Contribution Margin Ratio

The contribution margin ratio calculates the proportion of sales revenue that exceeds variable costs, showing what portion of sales contributes to covering fixed costs and generating profit.