Final answer:
Red muscle fibers, also known as slow oxidative (SO) fibers, contain a large number of mitochondria and possess myoglobin to store oxygen. False. The correct option is b: false
Step-by-step explanation:
False. Red muscle fibers, also known as slow oxidative (SO) fibers, contain a large number of mitochondria. These mitochondria are responsible for aerobic metabolism, which uses oxygen (O₂) in the metabolic pathway.
SO fibers are capable of contracting for longer periods of time due to the large amount of ATP they can produce. They are extensively supplied with blood capillaries to supply O₂ from the red blood cells in the bloodstream. SO fibers also possess myoglobin, an O₂-carrying molecule that stores some of the needed O₂ within the fibers themselves, giving them their red color. The correct option is b: false