In Electron Transport, the Three Protein Complexes (I, III, and IV)

question 30

Multiple Choice

In electron transport, the three protein complexes (I, III, and IV)

• A)act as proton pumps, which generate a proton gradient.
• B)transfer electrons from NAD+ to O₂.
• C)transfer electrons from FAD to O₂.
• D)act as electron pumps, which generate an electron gradient.
• E)act as Ca²⁺ pumps, which generate a Ca²⁺ gradient.

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Definitions:

Break-Even Point

The juncture where total expenses match total income, yielding neither profit nor loss.

Firm's Output

The aggregate amount of products and services generated by a business within a certain timeframe.

Lowest Price

The minimum cost at which a product or service can be purchased, often emphasized in marketing to attract consumers.

Short Run

A period during which at least one input, such as plant size or capital, is fixed and cannot be changed.