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NEET UG BIOLOGY MCQ: LOCOMOTION AND MOVEMENT
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Medium
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Understanding
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Read the statements regarding muscle proteins.
I. Actin is a thin filament and is made up of two F-actins.
II. The complex protein, tropomyosin is distributed at regular inervals of troponin.
III. Myosin is a thick filament which is also a polymerized protein.
IV. The globular head of meromyosin consists of light meromyosin (LMM).
Which of the above statements are correct?
I. Actin is a thin filament and is made up of two F-actins.
II. The complex protein, tropomyosin is distributed at regular inervals of troponin.
III. Myosin is a thick filament which is also a polymerized protein.
IV. The globular head of meromyosin consists of light meromyosin (LMM).
Which of the above statements are correct?
View answer and explanation
Correct option: C
I and III
Option C (I and III) is correct because actin is indeed a thin filament made of two F-actins, and myosin is a thick filament which is a polymerized protein.
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Identify A, B and C, so as to complete the given statements Which is not the function of endoskeleton? Read the following statements about human skeleton system and choose the option that correctly states them true (T) and false (F).
a. Total number of bones in hind limbs are 60
b. There are 26 bones in vertebral column of an adult man
c. There are 2 pairs of vertebrochondral ribs
d. Axial skeleton is comprised of 80 bones
Assertion : Muscle contraction force increases
with rise in strength of stimulus.
Reason : This is due to increased contraction of
individual muscle fibres with increase in stimulus
strength.
Identify A, B and C, so as to complete the given statements Which is not the function of endoskeleton? Read the following statements about human skeleton system and choose the option that correctly states them true (T) and false (F).
a. Total number of bones in hind limbs are 60
b. There are 26 bones in vertebral column of an adult man
c. There are 2 pairs of vertebrochondral ribs
d. Axial skeleton is comprised of 80 bones
Assertion : Muscle contraction force increases
with rise in strength of stimulus.
Reason : This is due to increased contraction of
individual muscle fibres with increase in stimulus
strength.