Class 11-Biology-chapter 17 – : Locomotion and Movement InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency? Insulin- Diabetes insipidus Prolactin- Cretinism Relaxin- Gigantism Parathyroid hormone- Tetany None 2. The globular head of myosin contains Troponin Calcium ions in large quantities. ATP ATPase enzyme. None 3. The term tetanus refers to The partial sustained contraction of major supporting muscles The result of wave summation, which produces a smooth and sustained contraction of a muscle The state of muscle fatigue caused by depletion of ATP and accumulation of lactic acid3 A stronger contraction resulting from multiple motor unit summation None 4. Which of the following contractile proteins contributes 55% of muscle protein by weight ? Troponin Myosin Tropomyosin Actin None 5. The joint between skull and atlas which allows nodding movement is called _______. None of the above Atlanto-axial joint Occipital condyle Atlanto-occipital joint None 6. Which one of the following is correctly matched? List IA Cytosine, uracil, thiamineB Malleus, incus, cochleaC Ilium, ischium, pubisD Actin, myosin, rhodopsin List II1 Pyrimidines2 Ear ossicles3 Coxal bones of the pelvic girdle4 Muscle proteins A B D C None 7. An acromian process is characteristically found in the Pelvic girdle of mammals Skull of frog Pectoral girdle of mammals Sperm of mammals None 8. The thin filaments of a myofibril contain two filaments of ___(A)__ actin and __(B)__ protein along with __(C)___ protein for masking binding site for myosin. A - F, B - troponin, C - Tropomyosin A - F, B - tropomyosin, C - troponin A - 1F, B - tropomyosin, C - troponin A - 2F, B - troponin, C - tropomyosin None 9. The contraction of one of the muscle rotates the forearm to turn the palm downward or backward. Identify the muscle from the following. Extensor Abductor Flexor and adductor Pronator None 10. Select the correct statement regarding the specific disorder of muscular or skeletal system Myasthenia gravis- auto immune disorder which inhibits sliding of myosin filaments Gout - inflammation of joints due to extra deposition of calcium Muscular dystrophy - age related shortening of muslces Osteoporosis - decrease in bone mass and higher chances of fractures with advancing age None 11. Skeletal muscles are striated as They have many blood vessels. They are made up of very few fibrils. They are made up of many fibres. They show a pattern of cross-banding. None 12. The H-zone in the skeletal muscle fibre is due to The absence of myofibrils in the central porhon of A-band Extension of myosin filaments in the central portion of the A-band The central gap between myosin filaments in the A-bands The central gap between actin filaments extending through myosin filaments in the A-band None 13. The characteristic and an example of a synovial joint in humans is Fluid filled synovial cavity between two bones : Joint between atlas and axis Fluid cartilage between two bones, limited movement : Knee joint Fluid filled between two joints, provides cushion : Skull bones Lymph filled between two bones, limited movement : Gliding joint between carpals None 14. Select the correct statement regarding the specific disorder of muscular or skeletal system. Myasthenia gravis - Autoimmune disorder which inhibits sliding of myosin filaments Osteoporosis - decrease in bone mass and higher chances of fractures with advancing age Gout - Inflammation of joints due to extra deposition of calcium. Muscular dystrophy - age related shortening of muscles None 15. The intervertebral discs are pads of cartilage placed between two adjacent vertebrae; the regions of the vertebrae that are in contact with these pads are Spinous processes Centra Articulating facets Transverse processes None 16. The further treatment of fibres with saturated salt solutions removes actin and its two associated proteins tropomyosin and troponin and also destroy the I-bands. This shows that the thin filaments are made up of................. proteins. None of the above Myosin Tropomyosin and troponin Actin None 17. If the skeletal muscle fibres are soaked and treated with high concentration of salts, large quantities of proteins are removed. The fibres can no longer contract and the A-bands disappear. This shows that Actin is essential for contraction Myosin is essential for contraction of the fibres Proteins do not play any role in the contraction of fibres Both myosin and actin are essential for contraction None 18. Which one of the following pairs of chemical substances is correctly categorized? Calcitonin and thymosin - Thyroid hormones Pepsin and prolactin - Two digestive enzymes secreted in stomach Troponin and myosin - Complex proteins in striated muscles Secretin and rhodopsin - Polypeptide hormones None 19. Upon stimulation of skeletal muscles, calcium is immediately made available for binding to troponin from sarcoplasmic reticulum Wood lymph bone None 20. An age-dependent disorder characterized by increased fragility and low bone mass resulting from deficiency of Ca and vitamin D is Rheumatoid arthritis Oesteoporosis Rickets Osteoarthritis None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
