BIOL 301 Exam 2 Practice Questions and Answers

BIOL 301 Exam 2 Practice Questions and Answers How many ATP can be produced through the electron transport chain from 1 NADH? a. 1.5 b. 2 c. 2.5 d. 2.7 - Ans:-c. 2.5 Blocking creatine kinase would likely cause which of the following in the cell? a. Increased [ATP] b. Increased [phosphocreatine (PCr)] c. Increased [AMP] d. Increased [glycogen] - Ans:-c. Increased [AMP] In the ATP-PCr system, the breakdown of 1 molecule of PCr results in the production of how many ATP? ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 2/14 a. 1 b. 2 c. 3 d. 4 - Ans:-a. 1 During recovery after exercise, the creatine kinase reaction would cause which of the following in the cell? a. Increased [PCr] b. Increased [ATP] c. Increased [Pi] d. None of the above - Ans:-b. Increased [ATP] If the body metabolizes 1 kg of glycogen how much weight would be lost? a. 1 kg b. 4 kg c. 10 kg d. 0 kg - Ans:-b. 4 kg ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 3/14 Where does glycolysis occur in the body? a. Cytoplasm b. Mitochondria c. Extracellular fluid d. All of the above - Ans:-a. Cytoplasm What does a kilocalorie measure? a. The amount of fat in food b. The density of food c. The heat released by food (when combusted) d. The likelihood that food will combust - Ans:-c. The heat released by food (when combusted) High amounts of inorganic phosphate (Pi) and AMP would have what effect on the phosphofructokinase reaction? a. Increased b. Decreased c. No change - Ans:-a. Increased ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 4/14 Which system produces ATP at the fastest rate? a. Phosphagen system b. Oxidative phosphorylation c. Glycolysis - Ans:-a. Phosphagen system Which substrate accounts for the largest energy stores in the body? a. CHO b. PRO c. FAT - Ans:-c. FAT Measuring energy consumption by heat given off by the body would be assessed by: a. Direct calorimetry b. Bomb calorimetry c. Expired gas analyzer d. Treadmill - Ans:-a. Direct calorimetry The RQ for carbohydrate is ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 5/14 a. 0.7 b. 0.82 c. 1.0 d. 1.12 - Ans:-c. 1.0 The hexokinase reaction is stimulated by: a. Increased glucose b. Increased acetyl CoA c. Increased NADH d. All of the above - Ans:-a. Increased glucose The difference between the total oxygen consumed during exercise and the total that would have been consumed had steady-state aerobic metabolism been reached from the start is the: a. Steady state debt b. Oxygen deficit c. a-v O2 difference d. Ventilatory threshold - Ans:-b. Oxygen deficit ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED FIRST PUBLISH OCTOBER 2024 Page 6/14 What would be the predominant energy system for maximal intensity exercise lasting 10 minutes? a. Phosphagen system b. Oxidative metabolism c. Glycolysis d. All would be equal - Ans:-b. Oxidative metabolism The increased reliance on fat as a fuel as a result of aerobic trai