Identify the characteristics of red muscle fibers from the following:
$I -$ Many mitochondria
$II -$ Use large amounts of $O_2$ for $ATP$ production
$III -$ Low amount of myoglobin
$IV -$ Less sarcoplasmic reticulum
Which of the above are characteristic of red muscle fibers?

  • A
    $I, II, III, IV$
  • B
    $I, II$
  • C
    $I, II, IV$
  • D
    $I, II, III$

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