MCQ Questions for Class 11 Biology: Ch 20 Locomotion and Movement
1. Which one of the following is the correct pairing of a body part and the kind of muscle tissue which moves it?
(a) Biceps of upper arm – Smooth muscle fibres
(b) Abdominal wall – Skeletal muscle
(c) Heart wall – Involuntary unstriated muscle
(d) Iris – Involuntary smooth muscle
► (d) Iris – Involuntary smooth muscle
2. A functional G-Actin molecule in its free state is bound to :
(a) Sodium ion and ATP
(b) Mangnese ion and ATP
(c) Magnesium ion and ATP
(d) None of the above
â–º (c) Magnesium ion and ATP
3. Study of muscles is called :
(a) Musclogy
(b) Mycology
(c) Myology
(d) Sarcology
â–º (c) Myology
4. Long bones function in:
(a) support
(b) support, erythrocyte and leucocyte synthesis
(c) support and erythrocyte synthesis
(d) erythrocyte formation
â–º (b) support, erythrocyte and leucocyte synthesis
5. Mitochondria in cardiac muscles:
(a) More than other muscles fibres
(b) Less than other muscles fibres
(c) Equal than other muscles fibres
(d) None of the above
â–º (a) More than other muscles fibres
6. Myosin filament appear dark under microscope due to :-
(a) Dark colour
(b) Melanin colour
(c) Black colour
(d) Double-refractive index
â–º (d) Double-refractive index
â–º (d) Double-refractive index
7. Which one of the following membranes secretes a watery fluid that lubricates and cushions the joint?
(a) Tendons
(b) Synovial membrane
(c) Ligaments
(d) Cartilage
â–º (b) Synovial membrane
8. Actin filaments are found in all eukaryotic cells but reportedly absent in :
(a) Fish sperms
(b) Both (a) & (c)
(c) Nematode sperms
(d) Human sperms
â–º (c) Nematode sperms
9. One of following has contractile properties:
(a) Actin
(b) Coronin
(c) Troponin
(d) None of the above
â–º (a) Actin
10. The membranous areas between the cranial bones of the foetal skull are called
(a) Sutures
(b) Areolas
(c) Foramina
(d) Fontanelle
â–º (d) Fontanelle
11. Select the correct statement regarding the specific disorder of muscular or skeletal system:
(a) Muscular dystrophy - agerelated shortening or muscles.
(b) Osteoporosis - decrease in bone mass and higher chance of fractures with advancing age.
(c) Myastheniagrav is - Auto immune disorder which inhibits sliding of myosin filaments
(d) Gout - inflammation of joints due to extra deposition of calcium.
â–º (b) Osteoporosis - decrease in bone mass and higher chance of fractures with advancing age.
12. The contractile unit of muscle is a part of myofibril between
(a) A band and I band
(b) Z line and Z line
(c) Z line and A band
(d) Z line and I band
â–º (b) Z line and Z line
13. A meromyosin molecule doesn’t contain :
(a) arm
(b) trunk
(c) tail
(d) head
â–º (b) trunk
14. What is the type of movable joint present between the atlas and axis?
(a) Gliding
(b) Saddle
(c) Hinge
(d) Pivot
â–º (d) Pivot
15. Number of cervical vertebrae in camel is:
(a) more than that of rabbit
(b) less than that of rabbit
(c) same as that of whale
(d) more than that of horse
â–º (c) same as that of whale
16. Myoglobin was the first protein to have its three-dimensional structure revealed. Ravi was diagnosed with myoglobin in his bloodstream. This had occurred due to :
(a) myasthenia gravis
(b) muscle injury
(c) conversion of Hb into Mb
(d) Arthritis
â–º (b) muscle injury
17. Contractile unit of muscle fibres:
(a) H line
(b) Sarcomere
(c) H zone
(d) None of the above
â–º (b) Sarcomere
18. Cori cycle relationship between the :-
(a) Muscle glycogen & liver glycogen
(b) Muscle glycogen & liver glucose
(c) Muscle glycogen & blood glucose
(d) All of the above
â–º (a) Muscle glycogen & liver glycogen
19. ATPase enzyme needed for muscle contraction is located in
(a) Myosin
(b) Actin
(c) Troponin
(d) Actinin
â–º (a) Myosin
20. Papillary muscle found in:
(a) Heart
(b) Liver
(c) Kidney
(d) Lung
â–º (a) Heart
21. Rigor mortis is:
(a) Contraction of muscles after death
(b) Contraction of muscles before death
(c) Shivering of muscles
(d) None of the above
â–º (a) Contraction of muscles after death
22. Myo fibres also known as:
(a) Sarco axis
(b) Sarco mysium
(c) Sarcostylets
(d) None of the above
â–º (c) Sarcostylets
23. Which joint occurs between humerus and radioulna?
(a) Ball and socket joint
(b) Sliding
(c) Pivot
(d) Hinge joint
â–º (d) Hinge joint
24. Skeletal muscle bundles [fascicles] are held together by a common connective tissue layer called:
(a) Perimysium
(b) Endomysium
(c) Fascia
(d) Aponeurosis
â–º (c) Fascia
25. Sella turcica is
(a) Depression of long bone
(b) Ridge over a bone
(c) Depression in the skull in the area of pituitary gland
(d) Ridge in the skull over the area of pituitary gland
â–º (c) Depression in the skull in the area of pituitary gland
26. A deltoid ridge occurs in:
(a) Radius
(b) Ulna
(c) Femur
(d) Humerus
â–º (d) Humerus
27. Isotonic contraction takes places during:
(a) Load on head
(b) Walking
(c) Exercise
(d) All of the above
â–º (b) Walking
28. Muscles are attached to bones via :
(a) Tendon
(b) Ligament
(c) Both (a) & (b)
(d) None of these
â–º (a) Tendon
29. Epimysium of muscle are made up of :-
(a) White fibrous connective tissue
(b) Adipose connective tissue
(c) Reticular connective tissue
(d) Areolar connective tissue
â–º (a) White fibrous connective tissue
30. The H-zone in the skeletal muscle fibre is due to:
(a) The central gap between myosin filaments in the A-band.
(b) The central gap between actin filaments extending through myosin filaments in the A-band
(c) Extension of myosin filaments in the central portion of the A-band.
(d) The absence of myofibrils in the central portion of A-band.
â–º (b) The central gap between actin filaments extending through myosin filaments in the A-band
31. The only immediate source of energy for muscular contraction is
(a) ATP
(b) Phosphocreatinine
(c) Phosphoarginine
(d) Glucose
â–º (a) ATP
32. At the base of skull, a large hole is present which allows brain to continue with the spinal cord. That hole is called:
(a) Foramen ovale
(b) Foramen magnum
(d) Vertebral foramen
(d) Obturator foramen
â–º (b) Foramen magnum