ASCM Chapter 2 Review Exam Questions & Answers 2024/2025 The immediate source of energy for all cellular activity, including the contraction of muscle fibers is
a. phosphocreatine (PCr)
b. ATP
c. ADP
d. glucose - ANSWERSB. ATP
Which bioenergetic pathway is sometimes called the "anaerobic" pathway?
a. phosphagen
b. oxidative
c. nonoxidative
d. aerobic - ANSWERSC. nonoxidative
the primary advantage of which bioenergetic pathway is that it can produce large amounts of ATP to sustain prolonged exercise, without producing fatiguing by products?
a. oxidative
b. nonoxidative
c. anaerobic
d. phosphagen - ANSWERSA. oxidative
within a skeletal muscle fiber, large amounts of calcium are stored in the a. nuclei b. mitochondria
c. myosin
d. sarcoplasmic reticulum - ANSWERSD. Sarcoplasmic reticulum
During long duration exercise of submaximal intensity (marathon running etc), which type of muscle fibers are primarily recruited?
a. Type I
b. Type IIA
c. Type IIX
d. Type IIB - ANSWERSA. Type I
The ATPase that is used to produce a muscle fiber twitch by way of sliding filaments is found a. on actin
b. on myosin cross bridge heads
c. within the SR
d. within nuclei - ANSWERSB. myosin cross bridges
The capacity of endurance training to increase the amount of ATP produced by oxidative phosphorylation is owing to
a. increased mitochondrial content
b. increased muscle fiber size
c. increased size of the SR
d. decreased capillary - ANSWERSA. increased mitochondrial content
A single motor neuron and all the muscle fibers it innervates comprise a
a. phosphocreatine (PCr)
b. ATP
c. ADP
d. glucose - ANSWERSB. ATP
Which bioenergetic pathway is sometimes called the "anaerobic" pathway?
a. phosphagen
b. oxidative
c. nonoxidative
d. aerobic - ANSWERSC. nonoxidative
the primary advantage of which bioenergetic pathway is that it can produce large amounts of ATP to sustain prolonged exercise, without producing fatiguing by products?
a. oxidative
b. nonoxidative
c. anaerobic
d. phosphagen - ANSWERSA. oxidative
within a skeletal muscle fiber, large amounts of calcium are stored in the a. nuclei b. mitochondria
c. myosin
d. sarcoplasmic reticulum - ANSWERSD. Sarcoplasmic reticulum
During long duration exercise of submaximal intensity (marathon running etc), which type of muscle fibers are primarily recruited?
a. Type I
b. Type IIA
c. Type IIX
d. Type IIB - ANSWERSA. Type I
The ATPase that is used to produce a muscle fiber twitch by way of sliding filaments is found a. on actin
b. on myosin cross bridge heads
c. within the SR
d. within nuclei - ANSWERSB. myosin cross bridges
The capacity of endurance training to increase the amount of ATP produced by oxidative phosphorylation is owing to
a. increased mitochondrial content
b. increased muscle fiber size
c. increased size of the SR
d. decreased capillary - ANSWERSA. increased mitochondrial content
A single motor neuron and all the muscle fibers it innervates comprise a
