Mechanism of Muscle Contraction
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BIOXI20: LOCOMOTION AND MOVEMENT

340070 The myosin head detaches from actin soon after

1 ATP is hydrolysed into ADP and Pi
2 ATP binds to myosin head
3 Calcium binds to troponin
4 Calcium binds to myosin
BIOXI20: LOCOMOTION AND MOVEMENT

340071 Read the following statements and find out the incorrect statement

1 Sliding filaments theory states that contraction of a muscle fibre takes place by the sliding of the thick filaments over the thin filaments.
2 Muscle contraction is initiated by a signal sent by the CNS via sensory neuron.
3 A motor neuron along with the muscle fibre connected to it constitute a motor-end plate.
4 All of the above
BIOXI20: LOCOMOTION AND MOVEMENT

340072 During muscle contraction

1 Size of A-band remains the same
2 Size of H-zone becomes larger
3 Diameter of fibre increases
4 Size of I-bands increase
BIOXI20: LOCOMOTION AND MOVEMENT

340073 During muscular contraction which of the following events occur?
(a) 'H' zone disappears
(b) 'A' band widens
(c) 'I' band reduces in width
(d) Myosin hydrolyzes ATP, releasing the \(\mathrm{ADP}\) and \(\mathrm{Pi}\)
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.

1 (a), (c), (d). (e) only
2 (a), (b). (c), (d) only
3 (b), (c), (d), (e) only
4 (b), (d), (e), (a) only
NEET - 2021
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BIOXI20: LOCOMOTION AND MOVEMENT

340070 The myosin head detaches from actin soon after

1 ATP is hydrolysed into ADP and Pi
2 ATP binds to myosin head
3 Calcium binds to troponin
4 Calcium binds to myosin
BIOXI20: LOCOMOTION AND MOVEMENT

340071 Read the following statements and find out the incorrect statement

1 Sliding filaments theory states that contraction of a muscle fibre takes place by the sliding of the thick filaments over the thin filaments.
2 Muscle contraction is initiated by a signal sent by the CNS via sensory neuron.
3 A motor neuron along with the muscle fibre connected to it constitute a motor-end plate.
4 All of the above
BIOXI20: LOCOMOTION AND MOVEMENT

340072 During muscle contraction

1 Size of A-band remains the same
2 Size of H-zone becomes larger
3 Diameter of fibre increases
4 Size of I-bands increase
BIOXI20: LOCOMOTION AND MOVEMENT

340073 During muscular contraction which of the following events occur?
(a) 'H' zone disappears
(b) 'A' band widens
(c) 'I' band reduces in width
(d) Myosin hydrolyzes ATP, releasing the \(\mathrm{ADP}\) and \(\mathrm{Pi}\)
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.

1 (a), (c), (d). (e) only
2 (a), (b). (c), (d) only
3 (b), (c), (d), (e) only
4 (b), (d), (e), (a) only
NEET - 2021
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BIOXI20: LOCOMOTION AND MOVEMENT

340070 The myosin head detaches from actin soon after

1 ATP is hydrolysed into ADP and Pi
2 ATP binds to myosin head
3 Calcium binds to troponin
4 Calcium binds to myosin
BIOXI20: LOCOMOTION AND MOVEMENT

340071 Read the following statements and find out the incorrect statement

1 Sliding filaments theory states that contraction of a muscle fibre takes place by the sliding of the thick filaments over the thin filaments.
2 Muscle contraction is initiated by a signal sent by the CNS via sensory neuron.
3 A motor neuron along with the muscle fibre connected to it constitute a motor-end plate.
4 All of the above
BIOXI20: LOCOMOTION AND MOVEMENT

340072 During muscle contraction

1 Size of A-band remains the same
2 Size of H-zone becomes larger
3 Diameter of fibre increases
4 Size of I-bands increase
BIOXI20: LOCOMOTION AND MOVEMENT

340073 During muscular contraction which of the following events occur?
(a) 'H' zone disappears
(b) 'A' band widens
(c) 'I' band reduces in width
(d) Myosin hydrolyzes ATP, releasing the \(\mathrm{ADP}\) and \(\mathrm{Pi}\)
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.

1 (a), (c), (d). (e) only
2 (a), (b). (c), (d) only
3 (b), (c), (d), (e) only
4 (b), (d), (e), (a) only
NEET - 2021
Join With Us for More Updates
BIOXI20: LOCOMOTION AND MOVEMENT

340070 The myosin head detaches from actin soon after

1 ATP is hydrolysed into ADP and Pi
2 ATP binds to myosin head
3 Calcium binds to troponin
4 Calcium binds to myosin
BIOXI20: LOCOMOTION AND MOVEMENT

340071 Read the following statements and find out the incorrect statement

1 Sliding filaments theory states that contraction of a muscle fibre takes place by the sliding of the thick filaments over the thin filaments.
2 Muscle contraction is initiated by a signal sent by the CNS via sensory neuron.
3 A motor neuron along with the muscle fibre connected to it constitute a motor-end plate.
4 All of the above
BIOXI20: LOCOMOTION AND MOVEMENT

340072 During muscle contraction

1 Size of A-band remains the same
2 Size of H-zone becomes larger
3 Diameter of fibre increases
4 Size of I-bands increase
BIOXI20: LOCOMOTION AND MOVEMENT

340073 During muscular contraction which of the following events occur?
(a) 'H' zone disappears
(b) 'A' band widens
(c) 'I' band reduces in width
(d) Myosin hydrolyzes ATP, releasing the \(\mathrm{ADP}\) and \(\mathrm{Pi}\)
(e) Z-lines attached to actins are pulled inwards
Choose the correct answer from the options given below.

1 (a), (c), (d). (e) only
2 (a), (b). (c), (d) only
3 (b), (c), (d), (e) only
4 (b), (d), (e), (a) only
NEET - 2021
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