The A - band in skeletal muscle contains thick filaments (myosin) and overlapping thin filaments (actin) but it does not contain the Z-line. The Z-line marks the boundary of the sarcomere and is found within the I, band which is a region of the sarcomere that contains only thin filaments.
TS EAMCET-29.09.2020 Shift-II
Locomotion and Movement
238303
The immediate energy source of muscle contraction :
1 lactic add
2 ATP
3 glycogen
4 Phosphor creatine
Explanation:
Exp. C The immediate energy source for muscle contraction is ATP ( adenosine triphosphate). ATP is a high-energy molecule that provides the necessary energy for the cross-bridge cycling between actin and myosin, which generates the force for muscle contraction.
Rajasthan PMT - 2003 JIPMER-2002
Locomotion and Movement
238304
In muscular contraction
1 ATP breaks
2 ATP is formed
3 GTP breaks
4 None of these
Explanation:
Exp. A In muscular contraction, ATP (adenosine triphosphate) is broken down. ATP is hydrolyzed to release energy that powers the cross-bridge cycling between actin and myosin leading to muscle contraction to occur.
CG PMT-2005
Locomotion and Movement
238305
In a striated myofibril, the F-actin of thin filament is formed by
1 G-actin
2 Meromyosin
3 Troponin-C
4 \(\mathrm{Tn}-\mathrm{I}\)
Explanation:
Exp. A In a striated myofibril, the F-actin of thin filament is formed by G-actin. Each ' \(F\) ' actin is polymer of monomeric ' \(G\) ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' \(F\) ' actins through its length, A complex protein troponin is distributed at regular intervals on the tropomyosin.
The A - band in skeletal muscle contains thick filaments (myosin) and overlapping thin filaments (actin) but it does not contain the Z-line. The Z-line marks the boundary of the sarcomere and is found within the I, band which is a region of the sarcomere that contains only thin filaments.
TS EAMCET-29.09.2020 Shift-II
Locomotion and Movement
238303
The immediate energy source of muscle contraction :
1 lactic add
2 ATP
3 glycogen
4 Phosphor creatine
Explanation:
Exp. C The immediate energy source for muscle contraction is ATP ( adenosine triphosphate). ATP is a high-energy molecule that provides the necessary energy for the cross-bridge cycling between actin and myosin, which generates the force for muscle contraction.
Rajasthan PMT - 2003 JIPMER-2002
Locomotion and Movement
238304
In muscular contraction
1 ATP breaks
2 ATP is formed
3 GTP breaks
4 None of these
Explanation:
Exp. A In muscular contraction, ATP (adenosine triphosphate) is broken down. ATP is hydrolyzed to release energy that powers the cross-bridge cycling between actin and myosin leading to muscle contraction to occur.
CG PMT-2005
Locomotion and Movement
238305
In a striated myofibril, the F-actin of thin filament is formed by
1 G-actin
2 Meromyosin
3 Troponin-C
4 \(\mathrm{Tn}-\mathrm{I}\)
Explanation:
Exp. A In a striated myofibril, the F-actin of thin filament is formed by G-actin. Each ' \(F\) ' actin is polymer of monomeric ' \(G\) ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' \(F\) ' actins through its length, A complex protein troponin is distributed at regular intervals on the tropomyosin.
The A - band in skeletal muscle contains thick filaments (myosin) and overlapping thin filaments (actin) but it does not contain the Z-line. The Z-line marks the boundary of the sarcomere and is found within the I, band which is a region of the sarcomere that contains only thin filaments.
TS EAMCET-29.09.2020 Shift-II
Locomotion and Movement
238303
The immediate energy source of muscle contraction :
1 lactic add
2 ATP
3 glycogen
4 Phosphor creatine
Explanation:
Exp. C The immediate energy source for muscle contraction is ATP ( adenosine triphosphate). ATP is a high-energy molecule that provides the necessary energy for the cross-bridge cycling between actin and myosin, which generates the force for muscle contraction.
Rajasthan PMT - 2003 JIPMER-2002
Locomotion and Movement
238304
In muscular contraction
1 ATP breaks
2 ATP is formed
3 GTP breaks
4 None of these
Explanation:
Exp. A In muscular contraction, ATP (adenosine triphosphate) is broken down. ATP is hydrolyzed to release energy that powers the cross-bridge cycling between actin and myosin leading to muscle contraction to occur.
CG PMT-2005
Locomotion and Movement
238305
In a striated myofibril, the F-actin of thin filament is formed by
1 G-actin
2 Meromyosin
3 Troponin-C
4 \(\mathrm{Tn}-\mathrm{I}\)
Explanation:
Exp. A In a striated myofibril, the F-actin of thin filament is formed by G-actin. Each ' \(F\) ' actin is polymer of monomeric ' \(G\) ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' \(F\) ' actins through its length, A complex protein troponin is distributed at regular intervals on the tropomyosin.
The A - band in skeletal muscle contains thick filaments (myosin) and overlapping thin filaments (actin) but it does not contain the Z-line. The Z-line marks the boundary of the sarcomere and is found within the I, band which is a region of the sarcomere that contains only thin filaments.
TS EAMCET-29.09.2020 Shift-II
Locomotion and Movement
238303
The immediate energy source of muscle contraction :
1 lactic add
2 ATP
3 glycogen
4 Phosphor creatine
Explanation:
Exp. C The immediate energy source for muscle contraction is ATP ( adenosine triphosphate). ATP is a high-energy molecule that provides the necessary energy for the cross-bridge cycling between actin and myosin, which generates the force for muscle contraction.
Rajasthan PMT - 2003 JIPMER-2002
Locomotion and Movement
238304
In muscular contraction
1 ATP breaks
2 ATP is formed
3 GTP breaks
4 None of these
Explanation:
Exp. A In muscular contraction, ATP (adenosine triphosphate) is broken down. ATP is hydrolyzed to release energy that powers the cross-bridge cycling between actin and myosin leading to muscle contraction to occur.
CG PMT-2005
Locomotion and Movement
238305
In a striated myofibril, the F-actin of thin filament is formed by
1 G-actin
2 Meromyosin
3 Troponin-C
4 \(\mathrm{Tn}-\mathrm{I}\)
Explanation:
Exp. A In a striated myofibril, the F-actin of thin filament is formed by G-actin. Each ' \(F\) ' actin is polymer of monomeric ' \(G\) ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' \(F\) ' actins through its length, A complex protein troponin is distributed at regular intervals on the tropomyosin.
