Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 9SQ
Exercise scientists at an Olympic training want to monitor athletes to determine at what point their muscles are functioning anaerobically. They can do this by checking for a buildup of
- a. ADP.
- b. lactic acid.
- c. carbon dioxide.
- d. oxygen.
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The energy for muscle contraction is most directly obtained from a.phosphocreatine. b.ATP. c.anaerobic respiration. d.aerobic respiration.
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Chapter 6 Solutions
Campbell Essential Biology (7th Edition)
Ch. 6 - Which of the following statements is a correct...Ch. 6 - Prob. 2SQCh. 6 - Prob. 3SQCh. 6 - Of the three stages of cellular respiration, which...Ch. 6 - The final electron acceptor of electron transport...Ch. 6 - Prob. 6SQCh. 6 - Prob. 7SQCh. 6 - Prob. 8SQCh. 6 - Exercise scientists at an Olympic training want to...Ch. 6 - Prob. 10SQ
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- The maximal amount of oxygen that can be used by a person during physically exhausting exercise is called: Group of answer choices A. Maximal Oxygen Consumption B. VO2Max C. Aerobic Capacity D. Cardiovascular endurance E. Both A and B are correct All of the above are correctarrow_forwardThe 100 meter dash is a quick and short run requiring explosive speed. On completion of the dash the runners will continue to breathe hard for several seconds to minutes even though they are no longer running. Which of the following is the best explanation for why this is so? a.Slow oxidative fibers are recruited last and have only started to work at completion of the run. b.The runners' fast oxidative muscles are so slow to utilize oxygen it only begins aerobic respiration by the time the run has finished. c.The runners' use of stored oxygen, glucose and creatine phosphate is being replenished and this requires a prolonged increase of oxygen intake. d. Since the exercise was mostly aerobic exercise, the runners' bodies have not yet realizedarrow_forwardAn athlete participates in aerobic exercise three times a week. One of the changes is an increased ability to deliver oxygen to her skeletal muscles. Over time she notices that she can continue the exercise with greater intensity and duration. The reason for this change is that there is a(n) a. greater response from phosphate transfer. b. greater production of ATP from glycolysis and less from aerobic cellular respiration. c. greater production of ATP from aerobic cellular respiration. d. increased production of lactate.arrow_forward
- If an individual has impaired respiratory function, as occurs with emphysema, you would expect all of the following except a. production of additional lactate. b. an impaired ability to make ATP. c. low energy levels and complaints of being tired. d. increased aerobic cellular respiration.arrow_forwardWhich of the following can increase oxygen delivery to an actively metabolizing tissue? A. local reduction in pH in the active tissue B. relaxation of precapillary sphincters within the active tissue C. increased blood pressure as a consequence of tachycardia (that is, increased heart rate) D. increase in the number of open, perfused capillaries in the active tissue E. All of the above answer choices correctly answer the question.arrow_forwardMyoglobin benefits muscle cells by ... A. binding with O2 just as strongly as hemoglobin does. B. releasing bound O2 at lower PO2 conditions than hemoglobin does. C. increasing the effectiveness of fast glycolytic muscle fibers used in short bursts. D. contributing to the elasticity of flight muscle in birds. E. using hemoglobin as a reserve source of oxygen.arrow_forward
- Oxygen in our blood is transported by a protein named: A. haemoglobin B. keratin C. collagen D. myoglobinarrow_forwardWhich of the following is NOT a stock form of the key molecules for energy generation in muscle? A. Creatine phosphate B. Hemoglobin C. Glycogen D. Myoglobinarrow_forwardWhich of the following is true about slow motor units? a. They contain rapidly fatiguing white fibers b. They rely on anaerobic metabolism c. They have a high number of mitochondria d. There is limited blood supply e. All of the abovearrow_forward
- A fatigued muscle lacks sufficient oxygen for the aerobic respiration to supply needed ATP. The accumulation of Select one: a. acetic acid occurs and contractions occur with less strength b. lactic acid (lactate) occurs and muscle cramps may set in c. pyruvate occurs and muscle cramps set in d. ethyl alcohol occurs and less frequent contractions occurarrow_forwardWhich of the following will NOT facilitate the transfer of oxygen to tissues? a. decreased body temperature b. decreased pH of the blood c. increased carbon dioxide d. increased exercisearrow_forwardA person with a high Vo2maxa. needs less oxygen than someone with a low Vo2max.b. has stronger muscles than someone with a low Vo2max.c. is less likely to show muscle tetanus than someone with a low Vo2max.d. has fewer muscle mitochondria than someone with a low Vo2max.e. experiences less muscle fatigue during exercise than someone with a lowVo2max.arrow_forward
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