Class 11 Biology Chapter 20: Locomotion and Movement – 100 MCQs with Answers
1. The structural and functional unit of muscle is:
Answer: B) Sarcomere
2. Actin and myosin are:
Answer: C) Proteins
3. The contractile protein present in thin filament is:
Answer: C) Actin
4. Which is not a type of muscle in human body?
Answer: D) Striated smooth
5. The H-zone is found in:
Answer: B) Only myosin
6. The site of calcium storage in muscle fibre:
Answer: C) Sarcoplasmic reticulum
7. Which filament slides during muscle contraction?
Answer: A) Actin
8. Muscle fatigue is primarily due to:
Answer: A) Lactic acid accumulation
9. The first event in muscle contraction:
Answer: D) Impulse of motor neuron
10. ATP attached to myosin head is essential for:
Answer: A) Muscle relaxation
11. Synovial fluid is present in:
Answer: D) Synovial joints
12. The contractile protein found in thick filament is:
Answer: A) Myosin
13. Bone is mainly composed of:
Answer: B) Calcium phosphate
14. Osteocytes are found in:
Answer: A) Bone
15. Which joint is found at elbow?
Answer: B) Hinge
16. The smallest contractile unit in muscle fibre:
Answer: B) Sarcomere
17. The joint between atlas and axis is:
Answer: B) Pivot
18. Haversion canal is present in:
Answer: B) Bone
19. Intercalated discs are characteristic of:
Answer: C) Cardiac muscle
20. The type of cell responsible for forming new bone matrix:
Answer: B) Osteoblasts
21. The major function of red bone marrow:
Answer: B) Blood cell formation
22. The femur articulates with:
Answer: A) Tibia
23. A muscle which opposes the action of another is:
Answer: A) Antagonist
24. Which mineral is most important for muscle contraction:
Answer: B) Ca2+
25. A bone of the pectoral girdle:
Answer: A) Scapula
26. Ligaments connect:
Answer: B) Bone-bone
27. Vertebral column has how many cervical vertebrae:
Answer: B) 7
28. Immovable joints are also called:
Answer: C) Fibrous
29. Disease caused by chronic inflammation of joints:
Answer: A) Arthritis
30. The sliding filament theory was proposed by:
Answer: B) Huxley & Hanson
31. The number of bones in adult human skeleton:
Answer: A) 206
32. Epiphysis refers to:
Answer: B) End of bone
33. Calcium is stored in bone as:
Answer: B) Calcium phosphate
34. The non-striated muscle is:
Answer: C) Smooth
35. Axial skeleton does NOT include:
Answer: C) Clavicle
36. Deltoid tuberosity is found in:
Answer: C) Humerus
37. Sternum is commonly known as:
Answer: A) Chest bone
38. Tissue which connects bone to muscle:
Answer: B) Tendon
39. The only movable bone of the skull is:
Answer: C) Mandible
40. Periosteum is:
Answer: B) Outer membrane of bone
41. The point where muscle attaches to stationary bone:
Answer: B) Origin
42. Which of the following is a ball and socket joint?
Answer: C) Hip
43. Sarcolemma refers to:
Answer: B) Muscle cell membrane
44. The gliding joint is present in:
Answer: A) Wrist
45. The hyoid bone is unique because:
Answer: A) It does not articulate with any other bone
46. Human forearm contains:
Answer: A) Radius and ulna
47. A fracture is a:
Answer: C) Break in bone
48. Ossification refers to:
Answer: A) Bone calcification
49. Head nodding occurs at:
Answer: B) Atlas & occipital bone
50. Main protein of cartilage matrix:
Answer: A) Collagen
51. Which is a sesamoid bone?
Answer: A) Patella
52. The basic contractile unit in the muscle fibre:
Answer: B) Sarcomere
53. Typical number of ribs in humans:
Answer: B) 12
54. Muscles working in pairs are:
Answer: C) Antagonistic
55. Muscle tone is maintained by:
Answer: B) Nerve impulses
56. Myasthenia gravis affects:
Answer: A) Muscle contraction
57. Lowest number of bones is found in:
Answer: B) Pectoral girdle
58. Shortest muscle in human:
Answer: B) Stapedius
59. Main function of tendons:
Answer: A) Connect bone-muscle
60. Growth plates are made of:
Answer: A) Cartilage
61. Largest muscle in human body:
Answer: B) Gluteus maximus
62. Nerve-muscle junction is also called:
Answer: B) Neuromuscular junction
63. Involuntary muscles are:
Answer: D) Both B and C
64. Bone growth in length occurs at:
Answer: B) Epiphyseal plate
65. Cramps in muscles are due to:
Answer: C) Both
66. Osteoporosis is common in:
Answer: A) Old age
67. Shortest bone in human:
Answer: B) Stapes
68. The sarcoplasmic reticulum is a storehouse of:
Answer: A) Ca2+
69. A slipped disc involves:
Answer: C) Cartilage disc displacement
70. Which bone is not a part of the axial skeleton?
Answer: D) Humerus
71. Calcium deposition over joints leads to:
Answer: B) Osteoarthritis
72. Type of muscle found in walls of gut:
Answer: B) Smooth
73. Which cartilage is found in ear pinna:
Answer: A) Elastic
74. Failure of muscles to relax promptly is called:
Answer: B) Tetany
75. Main function of axial skeleton:
Answer: B) Protection
76. Scapula is commonly called:
Answer: C) Shoulder blade
77. The process of bone formation is:
Answer: B) Osteogenesis
78. Cranial bones protect:
Answer: A) Brain
79. Compact bone is organized in:
Answer: A) Lamellae
80. ATP is produced in muscles by:
Answer: C) Both
81. Major voluntary muscle is:
Answer: A) Skeletal
82. In children, bone growth in diameter occurs at:
Answer: A) Periosteum
83. Calcium is absorbed better in presence of:
Answer: A) Vitamin D
84. Immovable joints are in:
Answer: A) Skull
85. Strongest bone in body:
Answer: B) Femur
86. The shoulder joint is:
Answer: A) Ball and socket
87. Biceps are:
Answer: B) Flexors
88. A freely movable joint is called:
Answer: B) Synovial
89. The ‘Z’ line is present in:
Answer: C) Sarcomere
90. The muscle attached to hair follicle is:
Answer: A) Arrector pili
91. Parathyroid hormone regulates:
Answer: A) Blood calcium
92. Which protein is not found in muscles?
Answer: D) Tubulin
93. Which of the following is NOT a function of skeleton?
Answer: C) Filtration
94. Maximum calcium occurs in:
Answer: B) Bone
95. Schwann cells are associated with:
Answer: C) Nerve
96. Muscular dystrophy is:
Answer: A) Degeneration of muscle fibres
97. Rickets is caused due to deficiency of:
Answer: C) Vitamin D
98. Scurvy affects:
Answer: D) All above
99. Endomysium surrounds:
Answer: A) Single muscle fibre
100. Number of phalanges in one human hand:
Answer: C) 14