1.

    During strenuous exercise, muscle fatigue can occur due to the accumulation of which metabolic byproduct, inhibiting the binding of calcium to troponin C?

    A

    Lactate

    B

    Pyruvate

    C

    ATP

    D

    H+

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Muscle Fatigue, Metabolic Acidosis, Calcium Regulation, Troponin

    Related Questions

    1.

    Choose the incorrect statement about the skeletal muscles

    A

    Their activities are under the voluntary control of the nervous system

    B

    They are known as voluntary muscles

    C

    They are primarily involved in locomotory actions and changes of body postures

    D

    None of the above

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :skeletal muscles, voluntary control, locomotion

    2.

    Myofilaments or myofibrils are

    A

    Obliquely arranged filaments of muscle fibre

    B

    Parallely arranged filaments of muscle fibre

    C

    Horizontally arranged filaments of muscle fibre

    D

    Radially arranged filaments of muscle fibre

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Myofilaments, Myofibrils, Muscle fiber structure

    3.

    Largest muscle in the human body is

    A

    Gluteus Maximus

    B

    Heart

    C

    Biceps Brachii

    D

    Rectus Abdominis

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Human Anatomy, Muscular System

    4.

    A patient presents with muscle weakness and fatigue. Biochemical analysis reveals a defect in the calcium-binding protein crucial for muscle contraction, specifically within the thin filaments. Which protein is MOST likely affected?

    A

    Tropomyosin

    B

    Troponin T

    C

    Troponin I

    D

    Troponin C

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Application
    🎯Difficulty :Hard
    ⚡ Time Required :1.5 mins
    🔄Ncert Concepts :Muscle Contraction, Sliding Filament Theory, Calcium Regulation, Troponin, Tropomyosin

    5.

    What is the role of calcium ions in muscle contraction?

    A

    Binds to myosin, initiating the power stroke

    B

    Binds to troponin, exposing myosin-binding sites on actin

    C

    Hydrolyzes ATP to provide energy for contraction

    D

    Triggers the release of acetylcholine at the neuromuscular junction

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Understanding
    🎯Difficulty :Easy
    ⚡ Time Required :0.5 mins
    🔄Ncert Concepts :Muscles, Muscle Contraction, Calcium

    6.

    Contractile fibrils of the muscles are called

    A

    Neurofibrils

    B

    Collagen fibres

    C

    Myofibrils

    D

    Yellow fibres

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Muscle tissue, Myofibrils, Cell Biology

    7.

    Skeletal muscles are closely associated with the …A… components of the body. They have …B… appearance under the microscope and hence are called …C… muscles

    Choose the correct options to fill A, B and C, so as to complete the given NCERT statement

    A

    A: Skeletal, B: Striated, C: Striated

    B

    A: Visceral, B: Non-striated, C: Smooth

    C

    A: Cardiac, B: Striated, C: Cardiac

    D

    A: Skeletal, B: Non-striated, C: Smooth

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Medium
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :skeletal muscle, muscle tissue, histology

    8.

    Functional unit of skeletal muscle is called

    A

    Sarcomere

    B

    Muscle Fiber

    C

    Fascicle

    D

    Tendon

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :Skeletal Muscle Anatomy, Sarcomere

    9.

    Aerobic muscles called …A… and anaerobic muscles are called …B… . Here A and B refers to

    A

    A-red fibres; B-white fibres

    B

    A-white fibres; B-red fibres

    C

    A-white fibres; B-black fibres

    D

    A-red fibres; B-black fibres

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Remembering
    🎯Difficulty :Easy
    ⚡ Time Required :1 mins
    🔄Ncert Concepts :muscle types, aerobic and anaerobic metabolism

    10.

    Which of the following statements is true with reference to the structure of a muscle fibre?

    A

    H-zone is present in the middle of A-band

    B

    A-band is present in the middle of sarcomere

    C

    M-line is present in the middle of H-zone

    D

    All of the above

    Question Tags
    📚 Subject:Zoology
    📑 Chapter:Locomotion And Movement
    🎯Topic:Muscles
    🎓 Ncert Level:Understanding
    🎯Difficulty :Medium
    ⚡ Time Required :2 mins
    🔄Ncert Concepts :muscle fiber structure, sarcomere, A-band, H-zone, M-line

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