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

Subtopic:  Skeletal Muscle: Myofilaments |
 91%
From NCERT
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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

Subtopic:  Skeletal Muscle: Myofilaments |
 77%
From NCERT
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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

Subtopic:  Skeletal Muscle: Myofilaments |
 66%
From NCERT
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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

Subtopic:  Excitation Contraction Coupling I |
From NCERT
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Each Myosin filament is also a
1. Polymeric Protein
2. Monomeric Protein
3. Monomeric Glycoprotein
4. Polymeric Glycoprotein

Subtopic:  Skeletal Muscle: Myofilaments |
 72%
From NCERT
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Which of the following is a monomeric protein of thick filament?
1. Meromyosins
2. Macromyosins
3. Tropomyosin
4. Troponin

Subtopic:  Skeletal Muscle: Myofilaments |
 91%
From NCERT
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Each meromyosin has two
1. globular head with a short arm
2. Important part- HMM and LMM
3. Tails and one head
4. Short arms and one tail

Subtopic:  Skeletal Muscle: Myofilaments |
 76%
From NCERT
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The globular head is/has
1. An active ATPase enzyme
2. Binding sites for ATP
3. active sites for actin
4. All of these

Subtopic:  Skeletal Muscle: Myofilaments |
 97%
From NCERT
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Mechanism of muscle contraction is best explained by
1. Sliding Filament Theory
2. Sliding fibre theory
3. Sliding myofibre theory
4. Muscle sliding theory

Subtopic:  Sliding Filament Theory |
 98%
From NCERT
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Sliding Filament Theory states that
1. Contraction of muscle fibre takes place by the sliding of thin filaments over the thick filaments
2. Contraction of muscle fibre takes place by the sliding of thick filament over thin Filaments
3. Relaxation of muscle fibre takes place by the sliding of thick filament over thin filaments
4. Relaxation of muscle fibre takes place by the sliding of thin filament over thick filament

Subtopic:  Sliding Filament Theory |
 92%
From NCERT
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