Which of the following is not true regarding Z line?

  1. Made up of elastic fibres
  2. Present in centre of each I band
  3. It bisects the I band
  4. Thin Filaments are superficially touching to Z line.
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Which of the following is not true regarding M line?

  1. Thin membrane
  2. Fibrous
  3. Holds thick filament of A band
  4. Keeps the Actin filament in centre
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Sarcomere is

  1. Functional unit of contraction
  2. Portion between two successive Z lines
  3. A part of myofibrils
  4. All of these
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H zone is not

  1. Central portion of thin filament.
  2. Central portion of thick filament
  3. Present in resting state
  4. Both A and C
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The Central portion of thick filament is not overlapped by thin filament during…….. and is known as

  1. Motion, Z line
  2. Motion, H zone
  3. Resting State, H zone
  4. Resting state, Z line
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Thin filament is made up of two.....which in turn are made up of many…..

  1. F actins, G actins
  2. G actins, Factins
  3. G actins, g actins
  4. F actins, f actins
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How many F actins are there in a thin filament?

  1. Two
  2. Many
  3. Only one
  4. Depends upon thickness
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How many G actins are there in a thin filament?

  1. Two Filaments of many G actins
  2. One filament of hundreds of G actin
  3. Two Filaments of two hundreds of G actin
  4. Two Filaments of two G actins
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How many Filaments are there in thin filament?

  1. Two actin Filaments and two tropomyosin filaments
  2. Two actin Filaments and one tropomyosin filaments
  3. One actin filament and one tropomyosin filament
  4. One actin and two tropomyosin filament
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Subunit of troponin masks the

  1. Active binding sites for Myosin on actin
  2. Active binding sites for actin on Myosin
  3. In resting state, active binding sites for Myosin on actin
  4. In resting state, active binding sites for actin on Myosin
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