An example of anabolism is A. B. C. D. E. glucose oxidation to pyruvate. DNA rep

Question

An example of anabolism is A. B. C. D. E. glucose oxidation to pyruvate. DNA replication breakdown of starch or glycogen to glucose oxidation of fats to carbon dioxide and water. NONE of A-D are examples of anabolism QUESTION 22 Which statement among A-C regarding respiration is false? O A Respiration by a bacterium can only occur if oxygen is present. B. Respiration relies on reduction of a terminal electron acceptor to oxidize an organic food source. C.The formation of numerous, reduced electron carriers (e.g., NADH) occurs during respiration. D. Respiration yields more energy than does fermentation. E None of A-D is false; all are true

Explanation / Answer

First Question:

The answer will be DNA replication (Option B).

Explanation: Anabolism or constructive metabolism is the synthesis of complex biomolecules from simpler molecules & energy is stored in this method. Catabolism or destructive metabolism is the opposite of anabolism & here complex biomolecules are degraded to simpler form & energy is released. When glucose is oxidized to pyruvate energy is released & it is an example of catabolism. So, we can ignore option A. When starch or glycogen is breakdown to glucose complex molecules is converted to simpler form. It is also an example of catabolism. So, we can ignore option C. When fat is oxidized to carbon dioxide & water it is converted to simpler form & is an example of catabolism. So, we can ignore option D. As option A, C & D are incorrect, option E is also incorrect. In DNA replication complex nucleic acid molecules are formed. It is an example of anabolism. So, option B is correct.

Second Question (Question 22):

The false option will be respiration by bacterium can only occur if oxygen is present (Option A).

Explanation: In fermentation only 2 ATP are produced where as in aerobic respiration 38 ATP can be produced. So, respiration yields more energy than fermentation. Thus option D is correct. So, we can ignore option D. NADH carries electrons to the electron transport chain & formed during respiration. Thus option C is correct. So, we can ignore option C. In respiration final electron acceptor is either oxygen (aerobic) or other molecules (anaerobic) & it oxidize food source in respiration. Thus option B is correct. So, we can ignore option B. Bacteria can respire in presence of oxygen (aerobic) or absence of oxygen (anaerobic). Methanogens undergone anaerobic respiration. So, bacteria can respire in absence of oxygen also. Thus option B is false. So, the correct answer will be option A.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.