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Locomotion and Movement MCQs for NEET — Zoology Questions with Answers

Practice free Locomotion and Movement (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.

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The globular head is/has

A. An active ATPase enzyme B. Binding sites for ATP C. active sites for actin D. All of these

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Explanation

NCERT page number 306

20.2.1 Structure of Contractile Protein

Locomotion And Movement

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Mechanism of muscle contraction is best explained by

A. Sliding Filament Theory B. Sliding fibre theory C. Sliding myofibre theory D. Muscle sliding theory

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Explanation

NCERT page number 306

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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Sliding Filament Theory states that

A. Contraction of muscle fibre takes place by the sliding of thin filaments over the thick filaments B. Contraction of muscle fibre takes place by the sliding of thick filament over thin Filaments C. Relaxation of muscle fibre takes place by the sliding of thick filament over thin filaments D. Relaxation of muscle fibre takes place by the sliding of thin filament over thick filament

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Explanation

NCERT page number 306

20.2.1 Structure of Contractile Protein

Locomotion And Movement

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The motor unit actually has

A. Motor neuron B. Motor neuron+ muscle fibres C. Only muscle fibres D. It can be both B and C

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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Muscle Contraction is initiated by

A. A signal sent by CNS via a motor neuron B. A signal sent by PNS via a motor neuron C. A signal sent by ANS via efferent neuron D. A signal sent by ANS via efferent neuron

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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Neuromuscular junction or motor end plate is

A. The junction between a motor neuron and the sarcolemma of the muscle fibre B. The junction between motor neuron and sensory neuron C. The junction between sensory neuron and the sarcolemma of the muscle fibre D. Both A and C

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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A neural signal reaching this junction releases a neurotransmitter…………. Which generates an action potential in the ………..

A. Acetyl choline, Sarcolemma B. Inositol, Sarcolemma C. GABA, Sarcoplasmic reticulum D. GABA, Sarcoplasm

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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The calcium ions released in sarcoplasm will bind to

A. Tropomyosin B. Troponin C. Actin D. Meromyosin

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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The binding of troponin on actin Filaments actually masks the …..

A. Active site for Tropomyosin B. Active site for ATP C. Active site for Myosin D. Active site for troponin

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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Cross bridge is formed in between

A. Myosin head and active site of actin B. Active site of Myosin and head of actin C. Both A and B D. Between G actin and F actin

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Explanation

NCERT page number 307

20.2.2 Mechanism of Muscle Contraction

Locomotion And Movement

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