Bio 201 EXAM 3 ASU REVIEW
QUESTIONS WITH ALL CORRECT
ANSWERS – UPDATED!!
What are 2 contractile proteins found in myofibrils - Answer-myosin and actin
during excitation-contraction coupling, calcium is released into the sarcoplasm and
binds to _______ - Answer-troponin
Within the sarcomere, the overlap of actin and myosin creates ______ - Answer-A
bands
What is the H band of a sarcomere? - Answer-A region within the A band that lacks thin
filaments
Which is true of the light bands in skeletal muscle - Answer-They are called I bands and
are bisected by a Z-disc
Within skeletal muscle cells, what extends from one Z disc to the next and constitutes
one contractile unit? - Answer-sarcomere
What is found in thin filaments - Answer--tropomyosin
-F actin
-troponin
aerobic respiration utilizes which 2 molecules as fuel to generate ATP - Answer--fatty
acids
-Glucose
True or False: Aerobic respiration is important for producing energy for long-term
energy needs - Answer-True
The progressive weakness and loss of contractility of a muscle that results from
prolonged use is - Answer-muscle fatigue
What is true about lactic acid in muscle fibers - Answer-lactic acid does not build up in
muscle fibers so it does not cause muscle fatigue
During exercise, at which point does the rate of oxygen consumption plateau - Answer-
The maximum oxygen uptake rate
QUESTIONS WITH ALL CORRECT
ANSWERS – UPDATED!!
What are 2 contractile proteins found in myofibrils - Answer-myosin and actin
during excitation-contraction coupling, calcium is released into the sarcoplasm and
binds to _______ - Answer-troponin
Within the sarcomere, the overlap of actin and myosin creates ______ - Answer-A
bands
What is the H band of a sarcomere? - Answer-A region within the A band that lacks thin
filaments
Which is true of the light bands in skeletal muscle - Answer-They are called I bands and
are bisected by a Z-disc
Within skeletal muscle cells, what extends from one Z disc to the next and constitutes
one contractile unit? - Answer-sarcomere
What is found in thin filaments - Answer--tropomyosin
-F actin
-troponin
aerobic respiration utilizes which 2 molecules as fuel to generate ATP - Answer--fatty
acids
-Glucose
True or False: Aerobic respiration is important for producing energy for long-term
energy needs - Answer-True
The progressive weakness and loss of contractility of a muscle that results from
prolonged use is - Answer-muscle fatigue
What is true about lactic acid in muscle fibers - Answer-lactic acid does not build up in
muscle fibers so it does not cause muscle fatigue
During exercise, at which point does the rate of oxygen consumption plateau - Answer-
The maximum oxygen uptake rate
