339982
Which of the following is not the feature of red muscle fibres
1 They have high content of Myoglobin
2 They have plenty of mitochondria
3 They are called aerobic muscles
4 They have high amount of Sarcoplasmic reticulum
Explanation:
The red muscle fibres have high amount of myoglobin. White muscle fibres have high amount of sarcoplasmic reticulum.
BIOXI20: LOCOMOTION AND MOVEMENT
339983
Assertion : Acetylcholine released in the myoneural junction communicates neuron with a myocyte. Reason : Acetylcholine diffuses in the nerve muscle gap binds to the receptor on the sarcolemma which gets depolarized.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Biochemical event that occurs during muscle contraction involves action of acetylcholine. The nerve impulse stimulates a muscle fibre at a neuromuscular junction to produce acetylcholine which will bring about release of calcium ions into interior of muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
339984
Which of the following changes not occurred during muscle contraction?
1 Conversion of ATP into ADP + Pi
2 Cross bridge and power stroke occurred
3 Length of I-band gets decreased
4 Length of A-band increases
Explanation:
During muscle contraction, the length of \(A\) band does not change.
BIOXI20: LOCOMOTION AND MOVEMENT
339985
How does the troponin-tropomysin complex affect cross-bridge cycling?
1 The troponin-tropomyosin complex regenerates ATP for the myosin ATPase
2 When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
3 The troponin-tropomysin complex regulates calcium release from the terminal cisternae.
4 The troponin-tropomyosin complex binds to the myosin head, facilitating contact with the actin filaments
Explanation:
When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
339982
Which of the following is not the feature of red muscle fibres
1 They have high content of Myoglobin
2 They have plenty of mitochondria
3 They are called aerobic muscles
4 They have high amount of Sarcoplasmic reticulum
Explanation:
The red muscle fibres have high amount of myoglobin. White muscle fibres have high amount of sarcoplasmic reticulum.
BIOXI20: LOCOMOTION AND MOVEMENT
339983
Assertion : Acetylcholine released in the myoneural junction communicates neuron with a myocyte. Reason : Acetylcholine diffuses in the nerve muscle gap binds to the receptor on the sarcolemma which gets depolarized.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Biochemical event that occurs during muscle contraction involves action of acetylcholine. The nerve impulse stimulates a muscle fibre at a neuromuscular junction to produce acetylcholine which will bring about release of calcium ions into interior of muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
339984
Which of the following changes not occurred during muscle contraction?
1 Conversion of ATP into ADP + Pi
2 Cross bridge and power stroke occurred
3 Length of I-band gets decreased
4 Length of A-band increases
Explanation:
During muscle contraction, the length of \(A\) band does not change.
BIOXI20: LOCOMOTION AND MOVEMENT
339985
How does the troponin-tropomysin complex affect cross-bridge cycling?
1 The troponin-tropomyosin complex regenerates ATP for the myosin ATPase
2 When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
3 The troponin-tropomysin complex regulates calcium release from the terminal cisternae.
4 The troponin-tropomyosin complex binds to the myosin head, facilitating contact with the actin filaments
Explanation:
When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
339982
Which of the following is not the feature of red muscle fibres
1 They have high content of Myoglobin
2 They have plenty of mitochondria
3 They are called aerobic muscles
4 They have high amount of Sarcoplasmic reticulum
Explanation:
The red muscle fibres have high amount of myoglobin. White muscle fibres have high amount of sarcoplasmic reticulum.
BIOXI20: LOCOMOTION AND MOVEMENT
339983
Assertion : Acetylcholine released in the myoneural junction communicates neuron with a myocyte. Reason : Acetylcholine diffuses in the nerve muscle gap binds to the receptor on the sarcolemma which gets depolarized.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Biochemical event that occurs during muscle contraction involves action of acetylcholine. The nerve impulse stimulates a muscle fibre at a neuromuscular junction to produce acetylcholine which will bring about release of calcium ions into interior of muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
339984
Which of the following changes not occurred during muscle contraction?
1 Conversion of ATP into ADP + Pi
2 Cross bridge and power stroke occurred
3 Length of I-band gets decreased
4 Length of A-band increases
Explanation:
During muscle contraction, the length of \(A\) band does not change.
BIOXI20: LOCOMOTION AND MOVEMENT
339985
How does the troponin-tropomysin complex affect cross-bridge cycling?
1 The troponin-tropomyosin complex regenerates ATP for the myosin ATPase
2 When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
3 The troponin-tropomysin complex regulates calcium release from the terminal cisternae.
4 The troponin-tropomyosin complex binds to the myosin head, facilitating contact with the actin filaments
Explanation:
When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
NEET Test Series from KOTA - 10 Papers In MS WORD
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BIOXI20: LOCOMOTION AND MOVEMENT
339982
Which of the following is not the feature of red muscle fibres
1 They have high content of Myoglobin
2 They have plenty of mitochondria
3 They are called aerobic muscles
4 They have high amount of Sarcoplasmic reticulum
Explanation:
The red muscle fibres have high amount of myoglobin. White muscle fibres have high amount of sarcoplasmic reticulum.
BIOXI20: LOCOMOTION AND MOVEMENT
339983
Assertion : Acetylcholine released in the myoneural junction communicates neuron with a myocyte. Reason : Acetylcholine diffuses in the nerve muscle gap binds to the receptor on the sarcolemma which gets depolarized.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Biochemical event that occurs during muscle contraction involves action of acetylcholine. The nerve impulse stimulates a muscle fibre at a neuromuscular junction to produce acetylcholine which will bring about release of calcium ions into interior of muscle fibre.
BIOXI20: LOCOMOTION AND MOVEMENT
339984
Which of the following changes not occurred during muscle contraction?
1 Conversion of ATP into ADP + Pi
2 Cross bridge and power stroke occurred
3 Length of I-band gets decreased
4 Length of A-band increases
Explanation:
During muscle contraction, the length of \(A\) band does not change.
BIOXI20: LOCOMOTION AND MOVEMENT
339985
How does the troponin-tropomysin complex affect cross-bridge cycling?
1 The troponin-tropomyosin complex regenerates ATP for the myosin ATPase
2 When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
3 The troponin-tropomysin complex regulates calcium release from the terminal cisternae.
4 The troponin-tropomyosin complex binds to the myosin head, facilitating contact with the actin filaments
Explanation:
When \(\left[\mathrm{Ca}^{2+}\right]\) is low, the troponintropomyosin complex blocks actin's binding site for myosin. When \(\left[\mathrm{Ca}^{2+}\right]\) is high, the complex rolls out of the way, allowing myosin to bind to actin and initiate the cross-bridge cycle.
