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NEET • BIOLOGY • LOCOMOTION AND MOVEMENT

Locomotion and movement practice · Easy

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61 Easy

61 of 88

Understanding +4 | -1

Identify the correct statement from the following

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Correct option: D

Locomotion occurs mainly by synovial joints

Option D (Locomotion occurs mainly by synovial joints) is correct because synovial joints allow for a wide range of movements, facilitating locomotion.

62 Easy

62 of 88

Remembering +4 | -1

Knee joint is

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Correct option: D

Synovial

Option D (Synovial) is correct because the knee joint is a synovial joint, characterized by a fluid-filled cavity that allows for a wide range of movement.

63 Easy

63 of 88

Remembering +4 | -1

Passage of ova through female reproductive tract is facilitated by

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Correct option: A

Ciliary movement

Option A is correct. Ciliary movement facilitates the passage of ova through the female reproductive tract.

64 Easy

64 of 88

Understanding +4 | -1

Select the correct matching of the type of the joint with the example in human skeletal system:

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Correct option: D

Saddle joint – between carpal and metacarpal of the thumb

Option D (Saddle joint – between carpal and metacarpal of the thumb) is correct because the saddle joint allows for the wide range of motion of the thumb.

65 Easy

65 of 88

Remembering +4 | -1

Fascicles are held together by the structure

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Correct option: C

Fascia

Option C (Fascia) is correct because fascia is the connective tissue that surrounds and holds muscle fascicles together.

66 Easy

66 of 88

Understanding +4 | -1

Which statement is correct for muscle contraction?

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Correct option: B

Length of A-band remains constant

Option B (Length of A-band remains constant) is correct because the A-band represents the length of the myosin filaments, which does not change during muscle contraction.

67 Easy

67 of 88

Understanding +4 | -1

Why some muscles are Red fibres

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Correct option: B

Myoglobin is high

Option B (Myoglobin is high) is correct because red muscle fibers have a high concentration of myoglobin, which binds oxygen and gives the muscle its red color.

68 Easy

68 of 88

Understanding +4 | -1

Number of bones in axial skeleton is

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Correct option: C

Less than the number of appendicular skeleton bones

Option C (Less than the number of appendicular skeleton bones) is correct because the axial skeleton has 80 bones, while the appendicular skeleton has 126 bones.

69 Easy

69 of 88

Remembering +4 | -1

Troponin is a

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Correct option: B

Muscle protein

Option B (Muscle protein) is correct because troponin is a protein complex located on actin filaments in muscle cells, playing a crucial role in muscle contraction.

70 Easy

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Understanding +4 | -1

Assertion: White muscle fibres have very less quantity of myoglobin
Reason: White muscle fibres have high number of sarcoplasmic reticulum

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Correct option: B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

Option B (If both the assertion and reason are true but the reason is not a correct explanation of the assertion) is correct because white muscle fibers have less myoglobin and a high sarcoplasmic reticulum, but the latter doesn't explain the former.

71 Easy

71 of 88

Understanding +4 | -1

Arrange the following steps of muscle contraction in the sequence of events occurring first I. Receptor sites on sarcolemma II. Nerve impulse III. Release of

C{a^{2 + }}

IV. Acetylcholine release V. Shortening of sarcomere VI. Synaptic cleft VII. Spread of impulse over sarcolemma on T-tubule The correct option is

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Correct option: A

II → IV → VI → I → VII → III → V

Option A (II → IV → VI → I → VII → III → V) is correct because it represents the correct sequence of events in muscle contraction, starting with a nerve impulse and ending with sarcomere shortening.

72 Easy

72 of 88

Remembering +4 | -1

From outer to inside, the sequence of three bones present, in the middle ear of mammals, is

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Correct option: C

Malleus, incus and stapes

Option C (Malleus, incus and stapes) is correct because it represents the correct order of the ear ossicles from the outer ear to the inner ear.

73 Easy

73 of 88

Remembering +4 | -1

Identify the movements that are exhibited by cells in the human body

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Correct option: D

A, B & C

Option D is correct. Human cells exhibit amoeboid, ciliary, and muscular movements.

74 Easy

74 of 88

Understanding +4 | -1

Study the following statement
I. Accumulation of acidic acid in muscles causes fatigue
II. Accumulation of lactic acid in muscles causes fatigue
III. Anaerobic respiration takes place in muscles
IV. Cori cycle occurs in muscles
Choose the correct set of statements

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Correct option: D

II, III and IV

Option B (II, III and IV) is correct because lactic acid accumulation, anaerobic respiration, and the Cori cycle are all associated with muscle fatigue.

75 Easy

75 of 88

Remembering +4 | -1

Neuromuscular junction is a junction between

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Correct option: C

Motor neurons and sarcolemma of muscles

Option C (Motor neurons and sarcolemma of muscles) is correct because the neuromuscular junction is the synapse between a motor neuron and the muscle fiber's membrane (sarcolemma).

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76 Easy

76 of 88

Understanding +4 | -1

Cardiac muscles are different from that of skeletal muscles as the former are

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Correct option: A

Striated but involuntary

Option A (Striated but involuntary) is correct because cardiac muscles have striations like skeletal muscles but are controlled involuntarily by the autonomic nervous system.

77 Easy

77 of 88

Understanding +4 | -1

Choose odd one w.r.t. properties of non-striated muscle fibres.

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Correct option: A

Myofibrils show alternate light and dark bands

Option A (Myofibrils show alternate light and dark bands) is the odd one out because non-striated muscle fibers (smooth muscles) do not have the striated appearance due to the arrangement of actin and myosin.

78 Easy

78 of 88

Analyzing +4 | -1

How many of the following statements is/are incorrect?
A. Scapula is situated in the dorsal part of thorax between the second and the seventh ribs.
B. The striated appearance of a myofibril is due to the distribution pattern of sarcoplasmic reticulum.
C. Myosin possess oxygen storing capacity.
D. The central hollow portion of vertebra is called neural canal.
E. I-band shortens during muscle contraction.

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Correct option: A

Two

Option A (Two) is correct because two of the statements provided are incorrect regarding the anatomy and physiology of muscles and bones.

79 Easy

79 of 88

Understanding +4 | -1

Which one of the following is true during ageing?

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Correct option: A

The decreased bone mass and increased chances of fractures

Option A (The decreased bone mass and increased chances of fractures) is correct because osteoporosis, a condition associated with aging, leads to decreased bone density and increased fracture risk.

80 Easy

80 of 88

Remembering +4 | -1

In the thin filament of skeletal muscle fibre, a small globular protein that masks the active sites on the F-actin L, is

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Correct option: D

Troponin

Option D (Troponin) is correct because troponin is the globular protein that masks the active sites on F-actin in the thin filament.

81 Easy

81 of 88

Understanding +4 | -1

Read the following statements and select accordingly.

Statement-A : Tetany can occur due to excess of thyrocalcitonin.

Statement-B : Muscle fibre contracts to the maximum when the stimulus has atleast the threshold value.

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Correct option: C

Both statements A and B are correct

Option C (Both statements A and B are correct) is correct because tetany can be caused by hypocalcemia due to excess thyrocalcitonin, and muscle fibers contract maximally at or above the threshold stimulus.

82 Easy

82 of 88

Analyzing +4 | -1

Assertion (A): The joint between carpal and metacarpal of thumb in humans allows movement in many directions.
Reason (R): Gliding joint is present between carpals.

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Correct option: A

Assertion (A) is false but Reason (R) is true

Option A is correct because the joint between the carpal and metacarpal of the thumb allows movement in many directions due to it being a saddle joint, not a gliding joint, but the reason that gliding joints are present between carpals is true.

83 Easy

83 of 88

Remembering +4 | -1

Which of the following bone is not a part of appendicular skeleton ?

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Correct option: C

Atlas

Option B (If both assertion and reason are true but reason is not the correct explanation of assertion) is correct because both the assertion and the reason are true, but the reason does not explain why calcium is required for skeletal muscle contraction.

84 Easy

84 of 88

Understanding +4 | -1

Which of the following statements is correct?

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Correct option: D

All of the above

Option D (All of the above) is correct because all the statements are factually correct: the mandible is the only movable skull bone, arm movements aid balance during walking, and cartilaginous joints have limited mobility due to fibrocartilage discs.

85 Easy

85 of 88

Understanding +4 | -1

Which muscle component is the smallest among the given options?

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Correct option: C

Actin

Option C (Actin) is correct because actin is a protein that forms the thin filaments within the sarcomere, making it smaller than muscle fibers, myofibrils, and sarcomeres.

86 Easy

86 of 88

Remembering +4 | -1

Thin filament in a sarcomere does not contains

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Correct option: A

Meromyosin

Option C (If Assertion is true but Reason is false) is correct because while muscle contraction force increases with stimulus strength, this is due to the recruitment of more muscle fibers, not increased contraction of individual fibers.

87 Easy

87 of 88

Remembering +4 | -1

Macrophages and leucocytes in blood exhibits

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Correct option: A

Amoeboid movement

Option A is correct. Macrophages and leucocytes exhibit amoeboid movement to engulf pathogens and debris.

88 Easy

88 of 88

Remembering +4 | -1

Globular head with a short arm and a tail are the two imperfect part of

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Correct option: D

Meromyosin

Option D (Meromyosin) is correct because meromyosin is a component of the myosin molecule, consisting of a globular head, a short arm, and a tail.

Revision notes and key takeaways

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Locomotion and movement practice · Easy

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