Homework SourseIt reflects that aerobic metabolism needs to be supplemented
It reflects that aerobic metabolism needs to be supplemented with anaerobic metabolism to meet increasing energy demands It reflects the point at which lactic acid production exceeds the body\'s ability to recycle lactate dun c. It will be higher in PCr trained persons It reflects the point at which the fuel being burned switched from predominantly carbohydrates to predominantly lipids 24. If no o2 is present, an NAD that picked up hydrogens from glycolysis will yield how many ATP from the electron transport chain? a, 1.5 ATP b, 2 ATP 2.5 ATP d, none 25. Major causes of fatigue are: a. inadequate energy delivery/metabolism b. Accumulation of metabolic by-products c. Failure of muscle contractile mechanism d. Altered neural control of muscle contraction e. All of the above 26. True or False. The RER measured from gases expired from the lungs will reflect the RQ measured a the muscle level at exercise intensities above the LT 27. True or False. The volume of inspired gas-the volume of expired gas.. During muscle contraction, the binding of ATP to the myosin head causes which ones of the following to happen a. Re cocking of the head to a higher energy position b. The power stroke c. Breaking of the action-myosin cross bridge d. Breaking of the action-trooping bond 29. Neural factors associated with strength gains do NOT include: a. 1synchronization of motor units b, 1 motor unit recruitment c. t co-activation of agonist and antagonist muscles d, inhibition by Golgi tendon organs 30. Aerobic training is NOT associated with which of the following: a. 1 cross-sectional area of Type fibers b. capillary to fiber ratio 1 c, 1 my log bin in type l fibers d. in lactate threshold workload e. RER for a given sub maximal 
Solution
24. If no O2 is present that means in anerobic condition 2 molecules of ATP produced in glycolysis.
In anerobic conditions due to lack of oxygen pyruvate( end product of glycolysis) converted to lactate.This restrict the ATP production.
However in aerobic condition NADH produced in glycolysis reoxidised by E.T.C and produced 2.5 molecule of ATP per molecule of NADH.
