Biology Illinois Edition (Glencoe Science)
7th Edition
ISBN: 9780078759864
Author: Alton Biggs
Publisher: MCG
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Chapter 34, Problem 21A
Summary Introduction
Introduction:
Every cell in our body requires oxygen to function. The air we inhale is composed of 20 percent oxygen. The remaining of the air is mostly nitrogen (79%). Our body cells use the oxygen we breathe and we eat to get energy from the food. This method is known ascellular respiration. During
Expert Solution & Answer
Answer to Problem 21A
Correct answer:
The correct answer is option (D) oxygen.
Explanation of Solution
Explanation/justification for the correct answer:
Option (D) oxygen. During cellular respiration, the cell utilizes oxygen to break down sugar. Breaking down sugar forms the energy which our body requires. So, the correct answer is option (B).
Explanation for incorrect answer:
Option (A) sulfur. In anaerobic respiration still incorporates the respiratory electron transport chain, however without using oxygen as the terminal electron acceptor. Instead, molecules such as sulfate (SO42-), nitrate (NO3−), or sulfur (S) are utilized as electron acceptors. So, this is an incorrect answer.
Option (B) hydrogen. In cellular respiration, Oxygen is the last electron acceptor of theelectron transportchain in the last step of respiration in cells. Oxygen combines with electrons and hydrogen ions to formwater.So, this is an incorrect answer.
Option (C) carbon dioxide. When the cell uses oxygen to break down sugar, oxygen is utilized, carbon dioxide is formed, and energy is released out. So, this is an incorrect answer.
Chapter 34 Solutions
Biology Illinois Edition (Glencoe Science)
Ch. 34 - Prob. 1ACh. 34 - Prob. 2ACh. 34 - Prob. 3ACh. 34 - Prob. 4ACh. 34 - Prob. 5ACh. 34 - Prob. 6ACh. 34 - Prob. 7ACh. 34 - Prob. 8ACh. 34 - Prob. 9ACh. 34 - Prob. 10A
Ch. 34 - Prob. 11ACh. 34 - Prob. 12ACh. 34 - Prob. 13ACh. 34 - Prob. 14ACh. 34 - Prob. 15ACh. 34 - Prob. 16ACh. 34 - Prob. 17ACh. 34 - Prob. 18ACh. 34 - Prob. 19ACh. 34 - Prob. 20ACh. 34 - Prob. 21ACh. 34 - Prob. 22ACh. 34 - Prob. 23ACh. 34 - Prob. 24ACh. 34 - Prob. 25ACh. 34 - Prob. 26ACh. 34 - Prob. 27ACh. 34 - Prob. 28ACh. 34 - Prob. 29ACh. 34 - Prob. 30ACh. 34 - Prob. 31ACh. 34 - Prob. 32ACh. 34 - Prob. 33ACh. 34 - Prob. 34ACh. 34 - Prob. 35ACh. 34 - Prob. 36ACh. 34 - Prob. 37ACh. 34 - Prob. 39ACh. 34 - Prob. 40ACh. 34 - Prob. 41ACh. 34 - Prob. 42ACh. 34 - Prob. 1STPCh. 34 - Prob. 2STPCh. 34 - Prob. 3STPCh. 34 - Prob. 4STPCh. 34 - Prob. 5STPCh. 34 - Prob. 6STPCh. 34 - Prob. 7STPCh. 34 - Prob. 8STPCh. 34 - Prob. 9STPCh. 34 - Prob. 10STPCh. 34 - Prob. 11STPCh. 34 - Prob. 12STPCh. 34 - Prob. 13STPCh. 34 - Prob. 14STPCh. 34 - Prob. 15STPCh. 34 - Prob. 16STPCh. 34 - Prob. 17STPCh. 34 - Prob. 18STPCh. 34 - Prob. 19STP
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