If a muscle fiber were to suddenly and permanently stop producing ATP the fiber would no longer be able to actively transport calcium out of the cytoplasm (sarcoplasm) and the intracellular calcium concentration would rise. Which of the following would you expect to happen?
A) Calcium would be transported to the sarcoplasmic reticulum therefore contractions would cease.
B) The fiber would twitch uncontrollably due to excessive calcium bound to troponin.
C) Myosin would be able to bind to the exposed binding sites on thin filaments but it would not be able to detach.
D) No change would occur in a muscle that was relaxed to begin with.
Correct Answer:
Verified
Q70: Which of the following statements best illustrates
Q71: Approximately 80% of a muscle fiber's volume
Q72: During development embryonic cells will fuse to
Q73: If given the exact same amount of
Q74: Addition of more myoglobin to a muscle
Q76: Only_ muscle cells are multinucleated.
Q77: A potential benefit of recruiting slow oxidative
Q78: Oxygen starved tissues can release chemical signals
Q79: The 100-meter dash is a quick and
Q80: Troponin, a major protein in thin filaments,
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents