Free NEET Biology multiple-choice questions on Locomotion and Movement. Attempt each question and reveal the answer with a full explanation.
The contractile protein of skeletal muscle involving ATPase activity is- Tropomyosin Myosin α-Actin Troponin Match List-I with List-II array ll List -I & List -II (a) Scapula & (i) Cartilaginous joints (b) Cranium & (ii) Flat bone (c) Sternum & (iii) Fibrous joints (d) Vertebral column & (iv) Triangular flat bone array Choose the correct answer from the options given below a-ii, b-iii, c-iv, d-i a-iv, b-ii, c-iii, d-i a-iv, b-iii, c-ii, d-i a-i, b-iii, c-ii, d-iv Which of the following is present between the adjacent bones of the vertebral column? Cartilage Areolar tissue Smooth muscle Intercalated discs Which of the following is a correct match for disease and its symptoms? Tetany – High Ca 2+ level causing rapid spasms. Myasthenia gravis – Genetic disorder resulting in weakening and paralysis of skeletal muscle Muscular dystrophy – An auto immune disorder causing progressive degeneration of skeletal muscle Arthritis – Inflammed joints Match List I with List II. array ll List I (Type of Joint) & List II (Found between) A. Cartilaginous Joint & I. Between flat skull bones B. Ball and Socket Joint & II. Between adjacent vertebrae in vertebral column C. Fibrous Joint & III. Between carpal and metacarpal of thumb D. Saddle Joint & IV. Between Humerus and Pectoral girdle array Choose the correct answer from the options given below: A-III, B-I, C-II, D-IV A-II, B-IV, C-I, D-III A-I, B-IV, C-III, D-II A-II, B-IV, C-III, D-I Which one of the following is the correct matching of three items and their grouping category ? Cytosine, uracil, thiamine — Pyrimidines Malleus, incus, cochlea — Ear ossicles ilium, ischium pubis — Coxal bones of pelvic girdle Actin, myosin, rodopsin — Muscle proteins Select the correct matching of the type of the joint with the example in human skeletal system : Cartilaginous joint — between frontal and pariental Pivot joint — between third and fourth cervical vertebrae Hinge joint — between humerus and pectoral girdle Gliding joint — between carpals Select the correct option. (1) There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs. (2) 8 th , 9 th and 10 th pairs of ribs articulate directly with the sternum. (3) 11 th and 12 th pairs of ribs are connected to the sternum with the help of hyaline cartilage. (4) Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum. Match the following columns and array ll Column-I & Column-II (a) Floating Ribs & (i) Located between second and seventh ribs (b) Acromion & (ii) Head of the Humerus (c) Scapula & (iii) Clavicle (d) Glenoid cavity & (iv) Do not connect with the sternum array select the correct option. a-i, b-iii, c-ii, d-iv a-iii, b-ii, c-iv, d-i a-iv, b-iii, c-i, d-ii a-ii, b-iv, c-i, d-iii During muscular contraction which of the following events occur? (a) 'H' zone disappears (b) 'A' band widens (c) 'I' band reduces in width (d) Myosine hydrolyzes ATP, releasing the ADP and Pi. (e) Z-lines attached to actins are pulled inwards. Choose the correct answer from the options given below: (a), (b), (c), (d) only (b), (c), (d), (e) only (b), (d), (e), (a) only (a), (c), (d), (e) only Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Osteoporosis is characterised by decreased bone mass and increased chance of fractures. Reason (R): Common cause of osteoporosis is increased levels of estrogen. In the light of the above statements, choose the most appropriate answer from the options given below. Both (A) and (R) are correct but (R) is not the correct explanation of (A) (A) is correct but (R) is not correct (A) is not correct but (R) is correct Both (A) and (R) are correct and (R) is the correct explanation of (A) Elbow joint is an example of : Ball and socket joint Pivot joint Hinge joint Gliding joint Which of the following statements are correct regarding skeletal muscle? A. Muscle bundles are held together by collagenous connective tissue layer called fascicle. B. Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. C. Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. D. M line is considered as functional unit of contraction called sarcomere. Choose the most appropriate answer from the options given below: A, B and C only B and C only A, C and D only C and D only Match List I with List II related to muscular/skeletal system: array llll ; & List I & ; & List II A. & Tetany & (I) & Inflammation of joints B. & Arthritis & (II) & Autoimmune disorder affecting neuromuscular junction C. & Myasthenia gravis & (III) & Wild contraction in muscle due to low Ca++ in body fluid D & Muscular dystrophy & (IV) & Progressive degeneration of skeletal muscle array Choose the correct answer from the options given below: A-IV, B-III, C-II, D-I A-III, B-I, C-II, D-IV A-I, B-II, C-III, D-IV A-III, B-II, C-I, D-IV Choose the correct statements regarding muscle contraction. A. A motor neuron carries a signal sent by the Central Nervous System (CNS) to the sarcolemma of the muscle fibre. B. The neural signal generates an action potential which causes the release of Ca++ into sarcoplasm. C. Increase in Ca++ inactivates the actin for breaking cross bridges. D. Actin binds to the myosin head to form a cross bridge. E. Shortening of sarcomere takes place, by pulling actin filaments towards the centre of 'A' band. Choose the correct answer from the options given below : A and B only C and E only C and D only A, B, D and E only Which of the following statements are correct with reference to human endoskeleton? A. Human skull is monocondylic. B. The joint between any two adjoining vertebrae is a cartilaginous joint. C. In human beings, the number of cervical vertebrae is seven. D. All ribs except the last 2 pairs are bicephalic. E. The occipital bone of skull is articulated with atlas vertebra. Choose the correct answer from the options given below: C, D and E only B, C and E only A, B and D only B and E only The number of vertebrae in a human is . 7 12 26 206 Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans? Femur-tibia-patella-tarsal Patella-femur-tibia-tarsal Femur-patella-tibia-tarsal Femur-tarsal-patella-tibia Sperm motility is due to flagellar movement ciliary movement amoeboid movement muscular movement Muscle contraction is initiated by a signal sent by the central nervous system by the release of . acetyl choline acetyl coenzyme A cyclic guanine monophosphate cyclic adenine monophosphate Which of the following is the correct order of arrangement of vertebrate column from the head to toe? Cervical vertebra, thoracic vertebra, sacrum, lumbar vertebra Sacrum, lumbar vertebra, thoracic vertebra, cervical vertebra Cervical vertebra, lumbar vertebra, thoracic vertebra, sacrum Cervical vertebra, thoracic vertebra, lumbar vertebra, sacrum Select the correct statement with respect to locomotion in humans A decreased level of progesterone causes osteoporosis in old people. Accumulation of uric acid crystals in joints causes their inflammation. The vertebral column has 10 thoracic vertebrae. The joint between adjacent vertebrae is a fibrous joint. The characteristics and an example of a synovial joint in humans is Fluid cartilage between two bones, limited movements – Knee joints Fluid filled between two joints, provides cushion – Skull bones Fluid filled synovial cavity between two bones – Joint between atlas and axis Lymph filled between two bones, limited movement – Gliding joint between carpals Stimulation of a muscle fiber by a motor neuron occurs at : the neuromuscular junction the transverse tubules the myofibril the sacroplasmic reticulum Lack of relaxation between successive stimuli in sustained muscle contraction is known as :- (1) Spasm (2) Fatigue (3) Tetanus (4) Tonus Which of the following type of muscle fibres will be the first one to undergo fatigue? Aerobic fibres Slow oxidative fibres Fast oxidative-glycolytic fibres Fast glycolytic fibres Calcium is important in skeletal muscle contraction because it Detaches the myosin head from the actin filament. Activates the myosin ATPase by binding to it. Binds to troponin to remove the masking of active sites on actin for myosin. Prevents the formation of bonds between the myosin cross bridges and the actin filament. Which of the following muscular disorders is inherited? Botulism Tetany Muscular dystrophy Myasthenia gravis