- 1(current)
Q. No.Assertion (A): The dark band on myofibril is anisotropic band.
Reason (R): The light band on myofibril is isotropic band.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false
Reason (R): The light band on myofibril is isotropic band.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false
Subtopic: Â Skeletal Muscle: Myofilaments |Â Skeletal Muscle: Sarcomere |
 90%
From NCERT
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Assertion (A): Myosin is not a part of thin filament.
Reason (R): Meromyosin polymerises to form myosin.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false
Reason (R): Meromyosin polymerises to form myosin.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false
Subtopic: Â Skeletal Muscle: Myofilaments |
 83%
From NCERT
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Read the following statements:
i. Scapula is situated in the dorsal part of thorax between the second and the seventh ribs
ii. The striated appearance of a myofibril is due to the distribution pattern of sarcoplasmic reticulum
iii. Myosin possess oxygen storing capacity
iv. The central hollow portion of vertebra is called neural canal
v. I-band shortens during muscle contraction
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
One
i. Scapula is situated in the dorsal part of thorax between the second and the seventh ribs
ii. The striated appearance of a myofibril is due to the distribution pattern of sarcoplasmic reticulum
iii. Myosin possess oxygen storing capacity
iv. The central hollow portion of vertebra is called neural canal
v. I-band shortens during muscle contraction
How many of the above statements are incorrect?
1. Two
2. Three
3. Four
One
Subtopic: Â Skeletal Muscle: Myofilaments |Â Skeletal Muscle: Sarcomere |Â Appendicular Skeleton |Â Appendicular Skeleton: Girdle |Â Axial Skeleton |
 50%
From NCERT
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Find out the true (T)/ false (F) statements and choose the correct option.
I. The most abundant skeletal muscle protein is myosin
II. The length of A-band remains unchanged during muscle contraction.
III. Ileum is a part of pelvic girdle.
IV. The biggest muscle is Gluteus maximus in the buttock and the smallest is Stapedius in the middle ear
I. The most abundant skeletal muscle protein is myosin
II. The length of A-band remains unchanged during muscle contraction.
III. Ileum is a part of pelvic girdle.
IV. The biggest muscle is Gluteus maximus in the buttock and the smallest is Stapedius in the middle ear
| Options | I | II | III | IV |
| 1. | T | T | T | T |
| 2. | T | F | T | F |
| 3. | F | T | F | T |
| 4. | T | T | F | T |
Subtopic: Â Skeletal Muscle: Myofilaments |Â Skeletal Muscle: Sarcomere |
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Assertion (A): Actin filaments are called thin filaments.
Reason (R): They are thinner in comparison to myosin filaments.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): They are thinner in comparison to myosin filaments.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Â Skeletal Muscle: Myofilaments |
 85%
From NCERT
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Which of the following statements are correct regarding skeletal muscle?
Choose the most appropriate answer from the options given below:
| A: | Muscle bundles are held together by collagenous connective tissue layer called fascicle. |
| B: | Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. |
| C: | Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. |
| D: | M line is considered as functional unit of contraction called sarcomere. |
| 1. | C and D only | 2. | A, B and C only |
| 3. | B and C only | 4. | A, C and D only |
Subtopic: Â Skeletal Muscle: Basic Anatomy |Â Skeletal Muscle: Myofilaments |Â Skeletal Muscle: Sarcomere |
 55%
From NCERT
NEET - 2023
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- 1(current)
Q. No.
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