Question

quiz
2 is the author of the article suggesting that atp is only generated in the third stage of cellular respiration? which selection from
the article best supports your answer?
(a) yes; \when this happens, cells make small amounts of atp as well as lactic acid, which can build up in
muscle tissue and cause soreness and a burning sensation for humans, especially after exercising.\
(b) no; \during the citric acid cycle, two atp molecules are produced, along with two compounds that are
known as nad and fad.\
(c) no; \ultimately, atp is produced by oxidative phosphorylation, a process by which enzymes
(substances that speed up reactions) combine with oxygen.\
(d) yes; \most atp production occurs during the electron transport chain and oxidative phosphorylation
stage of cellular respiration.\
3 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.
4 read the following paragraph.
we all need energy to function, and we get that energy from the foods we eat. our cells extract
those nutrients needed to keep us going and then convert them into usable energy. this complex
yet efficient process is called cellular respiration. it converts the energy derived from sugars,
carbohydrates, fats and proteins into adenosine triphosphate, or atp. this is a high - energy
molecule that drives important processes in your body, like muscle contraction and nerve
impulses.
which phrase from the paragraph helps to explain what \derived\ means?
(a) energy to function
(b) get that energy from
(c) convert them into
(d) drives important processes

Explanation:

Question 2

To determine the answer, we analyze each option:

• Option A: The quote talks about lactic acid and small ATP in a different process (likely fermentation), not about ATP only in the third stage. Eliminate A.
• Option B: The citric acid cycle is the second stage, and the quote says ATP is produced there, so the answer to the first part should be "No". But the explanation about NAD and FAD is incorrect (NAD and FAD are carriers, not produced with ATP in that way). Eliminate B.
• Option C: Oxidative phosphorylation is the third stage, but the quote doesn't address other stages having ATP. Eliminate C.
• Option D: The quote says most ATP is in the third stage, but the first part of the answer would be "Yes", but the quote doesn't say only there. Wait, no—wait, the question is if the author suggests ATP is only generated in the third stage. Let's re - check:
• The third stage is electron transport chain/oxidative phosphorylation. Option B: The citric acid cycle (second stage) produces ATP, so the answer to "Is ATP only generated in third stage?" is "No". Option B's quote says "During the citric acid cycle, two ATP molecules are produced...", which shows ATP is made in a non - third stage, so the first part is "No", and this quote supports it. Wait, earlier mistake: Option B's quote says ATP is produced in the citric acid cycle (second stage), so the answer to the first question is "No", and this quote supports that. Option D's quote says most ATP is in third stage, but not only. So the correct answer is B. Wait, no—let's re - evaluate:
• The first part: Is ATP only generated in third stage? If there's ATP in other stages, the answer is "No". Option B's quote says ATP is produced in citric acid cycle (second stage), so answer is "No", and the quote supports it. Option C's quote is about oxidative phosphorylation (third stage) but doesn't address other stages. So the correct option is B.

• Option A: The phrases don't convey confusion. Words like "passed down", "releases", "pump", "flow" are more about a process, not confusion. Eliminate A.
• Option B: The process of electron transport chain is complex, not simple. These words describe a multi - step process, so it's not simple. Eliminate B.
• Option C: The phrases don't convey importance over other stages. They describe the process of the final stage. Eliminate C.
• Option D: "Passed down the chain", "releases energy", "pump hydrogen ions", "flow down the gradient" describe a complex series of actions that result in ATP production (productive). So these words convey the complexity and productivity of the final stage.

• "Derived" means obtained from.
• Option A: "energy to function" is about the use of energy, not its source. Eliminate A.
• Option B: "get that energy from" implies obtaining energy from a source, which is related to "derived" (obtained from).
• Option C: "convert them into" is about changing the form of energy, not its source. Eliminate C.
• Option D: "drives important processes" is about the use of ATP, not the source of energy. Eliminate D.

Answer:

B. No; "During the citric acid cycle, two ATP molecules are produced, along with two compounds that are known as NAD and FAD."

Question 3