wits study guide practice exams with complete solutions

Personal Trainer Certification Practice Exam #1 1.)_________________ is the most important source of immediate energy which lasts about 3 - 5 seconds a.Phosphocreatine b.Glycolysis c.Oxidative phosphorylation d.Aerobic glycolysis (Ch. 4, P. 66) - Answer- ...a.Phosphocreatine 2.)During muscle contraction, the _______________ releases calcium into the sarcoplasm, which allows for actin-myosin interaction. verse tubule plasmic reticulum sium nin/tropomyosin complex (Ch. 4, P. 68) - Answer- ...plasmic reticulum 3.)Which type of muscle fiber not only produces great force when stimulated but also resists fatigue? a.Type I b.Type IIa c.Type IIx d.Type Ia (Ch. 4, P. 69) - Answer- ...b.Type IIa 4.)The volume of blood pumped by the heart per beat is known as ______________. e capacity e rate volume e volume (Ch. 4, P. 78) - Answer- ...e volume 5.)What are the primary reasons women have lower VO2max values than men? lobin levels and motivation ation and body weight lobin levels and body fat percentage fat percentage and motivation (Ch. 4, P. 76) - Answer- ...lobin levels and body fat percentage 6.)As the respiratory exchange ratio (R) increases, ______________ become the primary fuel source for activity. hydrates ins ins (Ch. 4, P. 73) - Answer- ...hydrates 7.)Studies have revealed that ____________ is the most significant factor in maintaining VO2max with a reduced training load. ency B.time sity D.caloric intake (Ch. 4, P. 83) - Answer- ...sity 8.)_________ is the primary energy source cells use for biological work. a.Carbohydrate b.ATP c.Calcium d.ADP (Ch. 4, P. 66) - Answer- ...b.ATP 9.)Which form of heat loss occurs when heat is transferred from the surface of one object to the surface of another with no physical contact between the objects? ction ration ction tion (Ch. 4, P. 85) - Answer- ...tion 10.)____________ is the volume of blood pumped by the heart per minute. a.Heart rate b.Respiratory quotient c.Stroke volume d.Cardiac output (Ch. 4, P. 78) - Answer- ...d.Cardiac output 11.)During a ____________, participants exercise at progressively increasing work rates until they reach maximum work tolerance. d exercise test (GXT) al uptake test (MUT) -maximal test (SMT) d maximal test (GMT) (Ch. 4, P. 75) - Answer- ...d exercise test (GXT) 12.)The period of elevated oxygen uptake during recovery from exercise is known as __________. n deficit y-state requirement n debt n need payment (Ch. 4, P. 74) - Answer- ...n debt 13.)As the respiratory exchange ratio (R) decreases, the primary fuel utilized for exercise is ________________. in hydrate ine phosphate (Ch. 4, P. 73) - Answer- ... 14.)Which component of a cell is a major player for the production of ATP during aerobic metabolism? hondria us plasmic reticulum lasmic reticulum (Ch. 4, P. 66) - Answer- ...hondria 15.)The fundamental unit of muscle contraction is the _____________. sium cle ysium mere (Ch. 4, P. 67) - Answer- ...mere 16.)During periods of exercise, _______________ is the body's primary form of heat loss. ction ction ration tion (Ch. 4, P. 86) - Answer- ...ration 17.)An increase in the frequency of muscle stimulation into a smooth, sustained, high-tension contraction is called ____________. tion us tric e spasm (Ch. 4, P. 70) - Answer- ...us 18.)Which type of muscle fibers contract quickly and have an innate capacity to produce great force, but fatigue quickly? a.Type IIa b.Type I c.Type IIx d.Type Ia (Ch. 4, P. 69) - Answer- ...c.Type IIx 19.)In the general population, _____________ is the major variable influencing maximal cardiac output. e volume rate e rate ac rhythm (Ch. 4, P. 79) - Answer- ...e volume 20.)For the average male and female, about _________ of muscle fibers are type I. a.52% b.13% c.33% d.80% (Ch. 4, P. 69) - Answer- ...a.52% 21.)Which anaerobic energy pathway provides energy for maximal work lasting about two minutes? ine phosphate tive phosphorylation hondrial metabolism lysis (Ch. 4, P. 66) - Answer- ...lysis 22.)What protein does calcium bind to when it is released into the sarcoplasm during muscle contraction? myosin nin n (Ch. 4, P. 68) - Answer- ...nin 23.)The volume of oxygen missing during the first few minutes of work is the ____________. n debt B.oxygen deficit n repayment y-state requirement (Ch. 4, P. 74) - Answer- ...B.oxygen deficit 24.)For most people, aging gradually but systematically reduces VO2max by about _______ per year. a.10% b.5% c.7% d.1% (Ch. 4, P. 76) - Answer- ...d.1%