- 1(current)
Q. No.Which of the following is correct statement ?
| 1. | Actin and regulatory proteins are located in thin filament. |
| 2. | Z-lines anchor myosin (thick) filament to the ends of the sarcomere. |
| 3. | Sarcoplasmic reticulum stores acetylcholine. |
| 4. | Myosin cross bridges contain calcium binding sites. |
Subtopic: Skeletal Muscle: Myofilaments |
69%
Level 2: 60%+
NEET - 2022
Hints
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: Skeletal Muscle: Basic Anatomy | Skeletal Muscle: Myofilaments | Skeletal Muscle: Sarcomere |
55%
Level 3: 35%-60%
NEET - 2023
Hints
In the resting state, a subunit of __a__ masks the active binding sites for __b__ on the __c__ filaments.
| a | b | C | |
| 1. | Troponin | Myosin | Actin |
| 2. | Troponin | Actin | Myosin |
| 3. | Actin | Troponin | Myosin |
| 4. | Myosin | Actin | Troponin |
Subtopic: Skeletal Muscle: Myofilaments |
87%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Which one of the following pairs of chemical substances is correctly categorised?
| 1. | Pepsin and prolactin - Two digestive enzymes secreted in the stomach |
| 2. | Troponin and myosin - Complex proteins in striated muscles |
| 3. | Secretin and rhodopsin - Polypeptide hormones |
| 4. | Calcitonin and thymosin - Thyroid hormones |
Subtopic: Skeletal Muscle: Myofilaments |
86%
Level 1: 80%+
AIPMT - 2012
Hints
Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | A single filament of tropomyosin runs close to the ‘F’ actins throughout its length. |
| Statement II: | In the resting state, a subunit of troponin masks the active binding sites for myosin on the actin filaments. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Skeletal Muscle: Myofilaments |
51%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
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