NEET-UG Biology · Class 11
Muscle fibre types and fatigue — NEET & JEE Questions
Muscle fibre types and fatigue is a topic in Locomotion and Movement, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 13 published NEET-UG questions on Muscle fibre types and fatigue, each with the marking scheme of the real paper. The ideas it examines include Red vs white muscle fibre properties, Why a muscle tires during long effort.
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Key formulas and concepts
The ideas Muscle fibre types and fatigue is examined on, as they are tagged in the syllabus tree.
- Red vs white muscle fibre properties
- Why a muscle tires during long effort
Muscle fibre types and fatigue MCQs with solutions
10 of the 13 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Which pigment gives red skeletal muscle fibres their characteristic colour?
- A. Myoglobin
- B. Haemoglobin
- C. Melanin
- D. Keratin
Which muscle fibre type generally contains more mitochondria?
- A. White muscle fibres
- B. Red muscle fibres
- C. Both always contain identical numbers
- D. Only cardiac fibres contain mitochondria
Why are red muscle fibres better suited for prolonged activity than white fibres?
- A. They contain no actin
- B. They lack mitochondria and use only glycolysis
- C. They have more myoglobin and mitochondria and rely strongly on aerobic metabolism
- D. They cannot fatigue under any condition
Which feature is most typical of white skeletal muscle fibres?
- A. Inability to contract rapidly
- B. High myoglobin content and abundant mitochondria
- C. Exclusive use of oxidative phosphorylation
- D. Low myoglobin content and greater reliance on anaerobic metabolism
Slow oxidative muscle fibres are generally characterised by
- A. many mitochondria and high resistance to fatigue
- B. few mitochondria and rapid fatigue
- C. absence of myoglobin
- D. no aerobic metabolism
A sprinter relies heavily on fibres that produce rapid, powerful contractions but fatigue quickly. Which fibre type is most involved?
- A. White muscle fibres
- B. Red muscle fibres
- C. Smooth muscle fibres only
- D. Cardiac muscle fibres
A postural muscle must remain active for long periods with minimal fatigue. Which combination of properties would best support this function?
- A. Low myoglobin, few mitochondria and strong anaerobic dependence
- B. High myoglobin, many mitochondria and strong aerobic capacity
- C. No capillary supply and no oxidative enzymes
- D. Absence of ATP-dependent cross-bridges
Repeated intense contractions occur faster than oxygen can be supplied adequately. Which metabolic change is associated with muscle fatigue in this situation?
- A. Complete cessation of ATP use
- B. Immediate conversion of all white fibres into red fibres
- C. Greater reliance on anaerobic metabolism with lactate accumulation
- D. Permanent destruction of actin filaments
A marathon runner relies heavily on muscle fibres specialised for endurance. Which fibre features are most useful?
- A. High mitochondrial density and rich capillary supply
- B. Low myoglobin and few mitochondria
- C. Very rapid fatigue and mainly anaerobic metabolism
- D. No oxidative enzymes
Muscle sample P has abundant myoglobin and mitochondria, while sample Q has less myoglobin and fewer mitochondria. Which performance pattern is most likely?
- A. Q cannot generate ATP
- B. P fatigues faster, while Q is specialised for endurance
- C. Both must have identical endurance because both are skeletal muscle
- D. P is more fatigue-resistant, while Q is better suited to brief powerful activity
Common mistakes in Muscle fibre types and fatigue
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Assuming equal muscle mass implies identical functional performance.
- Assumes greater power necessarily means better fatigue resistance.
- Explains fatigue as permanent structural loss rather than reversible physiological limitation.
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