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EX PHYS FINAL EXAM QUESTIONS AND ANSWERS
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EX PHYS FINAL EXAM QUESTIONS AND ANSWERS
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EX PHYS FINAL EXAM QUESTIONS ANDANSWERS
Skeletal muscle hypertrophy in humans occurs due to
A. increased size of muscle fibers (cell hypertrophy)
B. doubling in the number of muscle fibers (cell hyperplasia)
C. decreased size of muscle fibers (cell atrophy)
D. both A and B - Answer-A. increased size of muscle fibers (cell hypertrophy)
If you are in a negative energy balance, this means that you
A. are taking in fewer kilocalories than you are expending
B. are taking in more kilocalories than you are expending
C. you are likely gaining weight over time
D. you are likely losing weight over time
E. A and D - Answer-E. A and D
Basal metabolic rate (resting metabolic rate) tends to decrease after the age of 50 due
to:
A. increases in dietary-induced thermogenesis
B. increases in muscle mass
C. increases in maximal heart rate
D. reductions in muscle mass - Answer-D. reductions in muscle mass
response from one exercise bout lasting 30 minutes is considered:
A. Frequency
B. acute
C. duration
D. chronic - Answer-B. acute
Type 1 motor units (slow twitch) are:
A. glycolytic
B. capable of producing high force
C. oxidative
D. easily fatigued - Answer-C. oxidative
Which of the following statements concerning muscle fiber type is true?
A. slow twitch fibers have fewer mitochondria
B. slow twitch fibers have more mitochondria
C. fast twitch fibers have more mitochondria
D. most humans have about 90% slow twitch fibers - Answer-B. slow twitch fibers have
more mitochondria
Which of the following would be the best indicator of an adaptation to endurance
training?
,A. reduction in maximal heart rate
B. reduction in heart rate at a given submaximal workload
C. increase in heart rate at a given submaximal workload
D. increase in resting heart rate
C. increase in maximal heart rate - Answer-B. reduction in heart rate at a given
submaximal workload
What type of muscle action is associated with the lowering phase of a bicep curl
exercise?
A. eccentric
B. concentric
C. isokinetic
D. isometric - Answer-A. eccentric
For a sedentary person, which modality will produce the highest VO2max value?
A. bicycle ergometer
B. treadmill
C. arm crank ergometer
D. swimming - Answer-B. treadmill
The best criteria for knowing that a subject has achieved a true VO2max is the
demonstration of:
A. a leveling off of blood pressure despite an increase in exercise intensity
B. a leveling off (a plateau) in VO2 despite an increase in exercise intensity
C. a leveling off of CO2 production despite an increase in exercise intensity
D. moderate fatigue of the test subject - Answer-B. a leveling off (a plateau) in VO2
despite an increase in exercise intensity
The thick filament comprising the myofibril is known as ________________.
A. actin
B. sarcolemma
C. myosin
D. tropomyosin - Answer-C. myosin
Which of the following covers the myosin binding sites on the actin filament?
A. sarcolemma
B. sarcoplasmic reticulum
C. troponin
D. tropomyosin - Answer-D. tropomyosin
The Henneman size (or muscle recruitment order) principle states that the typical order
of fiber recruitment is
A. type 1 to type 11a to type 11x
B. type 11a to type 1 to type 11x
C. the recruitment of fibers is random (unordered)
D. type 11x to type 11a to type 1 - Answer-A. type 1 to type 11a to type 11x
, Which type of elite athlete would be expected to have the highest percentage of fast
twitch muscle fibers in the muscles of their legs?
A. track sprinters
B. distance swimmers
C. marathon runners
D. Tour de France cyclists - Answer-A. track sprinters
For each gram of substrate (fat, carbohydrate, protein) used, which substrate provides
the greatest number of kilocalories of energy?
A. protein
B. fat
C. carbohydrate
D. no difference between these substrates - Answer-B. fat
A disaccharide forms from the union of:
A. two monosaccharides
B. a monosaccharide and a disaccharide
C. two polysaccharides
D. a monosaccharide and a lipid - Answer-A. two monosaccharides
Examples of monosaccharides include:
A. glucose, maltose and fructose
B. sucrose, lactose and maltose
C. glycogen, glucose and starch
D. galactose, fructose and glucose - Answer-D. galactose, fructose and glucose
Which of the following scenarios will result in the highest lactate level?
A. mile 15 of a steady-state paced marathon run
B. minute 2 of a 3-minute wrestling bout
C. world class sprinter immediately after an 8 second sprint
D. triathlete immediately after completing an 11 hour ironman distance event - Answer-
B. minute 2 of a 3-minute wrestling bout
When the energy system anaerobic glycolysis is in use, pyruvate is quickly converted
into:
A. lactate
B. glucose
C. citrate
D. acetyl CoA
E. beta oxidation - Answer-A. lactate
Stored ATP will provide energy for maximal exercise lasting up to ________________,
and the phosphocreatine (PCr) system can support maximal exercise lasting up to
______________.
A. ~10 seconds and ~30 seconds
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