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:  Skeletal Muscle: Myofilaments |
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 |
 67%
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 |
 88%
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 |
 74%
From NCERT
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The HMM of muscle fiber has not got

1. Head

2. Short arm

3. Tail

4. Both 2 and 3

Subtopic:  Skeletal Muscle: Myofilaments |
 75%
From NCERT
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The LMM of muscle fiber is

1. Tail

2. Head

3. Short arm

4. Both 1 and 3

Subtopic:  Skeletal Muscle: Myofilaments |
 79%
From NCERT
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The head part of the HMM of muscle fiber is

1. Globular

2. Triangular

3. Filamentous

4. Both 2 and 3

Subtopic:  Skeletal Muscle: Myofilaments |
 89%
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 |
 93%
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 |
 89%
From NCERT
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The motor unit actually has

1. Motor neuron

2. Motor neuron+ muscle fibres

3. Only muscle fibres

4. It can be both 2 and 3

Subtopic:  Excitation Contraction Coupling I |
 88%
From NCERT
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