CSCS CH 3 QUESTIONS AND
ANSWERS
The Krebs cycle occurs in which portion of the cell?
a. mitochondria
b. nucleus
c. membrane
d. cytoplasm - Correct Answers -*a. mitochondria
The law of mass action states which of the following?
a. A stronger action potential cannot produce a stronger contraction.
b. The concentrations of reactants or products will drive the direction of the reactions.
c. The weight or mass of an object creates a stronger action potential.
d. The rate of product formation is greatly influenced by the concentrations of the
reactants. - Correct Answers -*b. The concentrations of reactants or products will drive
the direction of the reactions.
An aerobic endurance athlete is trying to give himself a competitive edge over his
opponents. To improve his lactate threshold, what type of training should he engage in,
and in what direction would this shift his threshold?
a. long, slow distance; shifts to the left
b. high intensity; shifts to the right
c. moderate intensity; shifts to the left
d. long, slow distance; shifts to the right - Correct Answers -*b. high intensity; shifts to
the right
Two athletes are competing in upcoming competitions, a weightlifting meet and a
marathon. Which energy systems will each be primarily using, respectively?
a. oxidative and phosphagen
b. glycolytic and phosphagen
c. oxidative and glycolytic
d. phosphagen and oxidative - Correct Answers -*d. phosphagen and oxidative
During higher-intensity exercises, athletes often experience peripheral fatigue. Which of
the following is believed to be the reason for this type of fatigue?
a. lactate
b. increase in muscle pH
c. gluconeogenesis
d. metabolic acidosis - Correct Answers -*d. metabolic acidosis
ANSWERS
The Krebs cycle occurs in which portion of the cell?
a. mitochondria
b. nucleus
c. membrane
d. cytoplasm - Correct Answers -*a. mitochondria
The law of mass action states which of the following?
a. A stronger action potential cannot produce a stronger contraction.
b. The concentrations of reactants or products will drive the direction of the reactions.
c. The weight or mass of an object creates a stronger action potential.
d. The rate of product formation is greatly influenced by the concentrations of the
reactants. - Correct Answers -*b. The concentrations of reactants or products will drive
the direction of the reactions.
An aerobic endurance athlete is trying to give himself a competitive edge over his
opponents. To improve his lactate threshold, what type of training should he engage in,
and in what direction would this shift his threshold?
a. long, slow distance; shifts to the left
b. high intensity; shifts to the right
c. moderate intensity; shifts to the left
d. long, slow distance; shifts to the right - Correct Answers -*b. high intensity; shifts to
the right
Two athletes are competing in upcoming competitions, a weightlifting meet and a
marathon. Which energy systems will each be primarily using, respectively?
a. oxidative and phosphagen
b. glycolytic and phosphagen
c. oxidative and glycolytic
d. phosphagen and oxidative - Correct Answers -*d. phosphagen and oxidative
During higher-intensity exercises, athletes often experience peripheral fatigue. Which of
the following is believed to be the reason for this type of fatigue?
a. lactate
b. increase in muscle pH
c. gluconeogenesis
d. metabolic acidosis - Correct Answers -*d. metabolic acidosis
