Q11.Globular regulatory protein of skeletal muscle fibres is
(1) Tropomyosin
(2) Myosin
(3) Actin
(4) Troponin
Ans.4
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Q12.Which of the following is not an auto immune disorde
(1) Simple gout
(2) Rheumatoid arthritis
(3) Myasthenia gravis
(4) Multiple sclerosis
Ans.1
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Q13.Property common to muscular and neural tissues is
(1) Elasticity
(2) Extensibility
(3) Contractility
(4) Excitability
Ans 4
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Q14.Read the given features.
a. Absence of sarcomere
b. Presence of nucleus
c. Syncytial appearance
d. Presence of gap junctions Choose the option that reflects features of muscle fibres located in inner walls of reproductive tract.
(1) a & b only
(2) a, b & d
(3) c & d only
(4) a, b, c & d
Ans .2
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Q15.Dimensions of which of the following remains unaffected when skeletal muscle fibres are in maximally contracted state
(1)Region between two Z lines
(2) Anisotropic band
(3) Isotropic band
(4) 'H' zone
Ans.2
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Q16.Red muscle fibres differ from white muscle fibres as
(1) Former contains large quantities of oxygen binding pigment hemoglobin
(2) Latter has larger amount of sarcoplasmic reticulum than former
(3) Former are unbranched and multinucleated while latter are not
(4) Latter are responsible for aerobic respiration while former undergo only anaerobic respiration
Ans.2
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Q17.Locomotory structures in macrophages found in sem tissues are
(1) Flagella
(2) Cilia
(3) Stereocilia
(4) Pseudopodia
Ans.4
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Q18.'I'am primarily involved in locomotory actions and changes of body postures. 'I' have striped muscle fibres when observed through the microscope and my activities are under the voluntary control of the nervous system. Who am '1'?
(1) Cardiac muscles
(2) Iris
(3) Biceps
(4) Visceral muscles
Ans.3
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Q19.Sliding filament model of muscle contraction suggests that, the polymerised molecules the move to shorten & muscle as those of
(1) Troponin
(2) Collagen
(3) Actin
(4) Myosin
Ans.3
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Q20.lons essential for muscle contraction are stored in
(1) Sarcoplasm
(2) Sarcoplasmic reticulum
(3) Sphaerosomes
(4) Sarcosomes
Ans.2
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