Q. No.Actin and Myosin in muscle fibril are arranged
(1) Parallel to each other and perpendicular to the longitudinal axis of the myofibrils
(2) Perpendicular to each other and parallel to the longitudinal axis of the myofibrils
(3) Parallel to each other and parallel to the longitudinal axis of the myofibrils
(4) Perpendicular to each other perpendicular to the longitudinal axis of the myofibrils
(1) Parallel to each other and perpendicular to the longitudinal axis of the myofibrils
(2) Perpendicular to each other and parallel to the longitudinal axis of the myofibrils
(3) Parallel to each other and parallel to the longitudinal axis of the myofibrils
(4) Perpendicular to each other perpendicular to the longitudinal axis of the myofibrils
Which of the following is/are attributed with Actin filament?
(1) Thin filament
(2) Light bands
(3) Isotropic bands
(4) all of these
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.
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
Sarcomere is
(1) Functional unit of contraction
(2) Portion between two successive Z lines
(3) A part of myofibrils
(4) All of these
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
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
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
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
How many Filaments are there in thin filament?
1. Two F-actin Filaments and two tropomyosin filaments
2. Two F-actin Filaments and one tropomyosin filaments
3. One F-actin filament and one tropomyosin filament
4. One F-actin and two tropomyosin filament
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