Question

1. read the following phrases from the section \aboard the electron transport train.\ 1. passed down the chain 2. releases energy 3. pump hydrogen ions 4. flow down the gradient how do these words contribute to the tone of the section? (a) they convey a sense of how much more confusing the final stage of cellular respiration is over the other stages. (b) they convey a sense of how simple and straightforward the final stage of cellular respiration is. (c) they convey a sense of how much more important the final stage of cellular respiration is over the other stages. (d) they convey a sense of how complex and productive the final stage of cellular respiration is.

Explanation:

The phrases like "passed down the chain", "pump hydrogen ions" and "flow down the gradient" suggest a complex - series of processes. The mention of "releases energy" indicates productivity. They together show complexity and productivity in the final stage of cellular respiration.

Answer:

D. They convey a sense of how complex and productive the final stage of cellular respiration is.