340333
In the rest state, a subunit of troponin masks:-
1 Active binding sites for actin on the myosin filaments
2 Active binding sites for myosin on the actin filaments
3 Active binding sites for myosin on the myosin filaments
4 Active binding sites for actin on the actin filaments
Explanation:
During muscle contraction, calcium released from sarcoplasmic reticulum will bind to subunit of troponin of thin filament, binding of troponin to thin filament will expose (unmask) binding site for myosin.
BIOXI20: LOCOMOTION AND MOVEMENT
340334
Component of actin filament of a sarcomere is
1 Actin, troponin and tropomyosin
2 Troponin and actin
3 Actin and myosin
4 Myosin and troponin
Explanation:
Each actin (thin) filament is made of two ' F ' (filamentous) actins helically wound to each other. Each ' F ' actin is a polymer of monomeric ' G ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' F ' actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340335
Select the correct answer I. Each myosin (thin) filament is also a polymerised protein II. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for troponin.
1 Only I is correct
2 Only II is correct
3 Both are correct
4 None are correct
Explanation:
Each myosin (thick) filament is also a polymerised protein. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
BIOXI20: LOCOMOTION AND MOVEMENT
340336
Myosin is made up of monomeric proteins called
1 Troponin
2 Tropomyosin
3 Meromyosin
4 Both (1) and (3)
Explanation:
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called Meromyosin constitute one thick filament.
BIOXI20: LOCOMOTION AND MOVEMENT
340337
The functional unit of contraction is a
1 Portion of myofibril between two successive Z-lines
2 Portion of myofibril between two successive M-lines
3 Centre of the H-zone
4 Centre of the I-band
Explanation:
The portion of the myofibril between two successive ' Z ' lines is considered as the functional unit of contraction and is called a sarcomere.
340333
In the rest state, a subunit of troponin masks:-
1 Active binding sites for actin on the myosin filaments
2 Active binding sites for myosin on the actin filaments
3 Active binding sites for myosin on the myosin filaments
4 Active binding sites for actin on the actin filaments
Explanation:
During muscle contraction, calcium released from sarcoplasmic reticulum will bind to subunit of troponin of thin filament, binding of troponin to thin filament will expose (unmask) binding site for myosin.
BIOXI20: LOCOMOTION AND MOVEMENT
340334
Component of actin filament of a sarcomere is
1 Actin, troponin and tropomyosin
2 Troponin and actin
3 Actin and myosin
4 Myosin and troponin
Explanation:
Each actin (thin) filament is made of two ' F ' (filamentous) actins helically wound to each other. Each ' F ' actin is a polymer of monomeric ' G ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' F ' actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340335
Select the correct answer I. Each myosin (thin) filament is also a polymerised protein II. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for troponin.
1 Only I is correct
2 Only II is correct
3 Both are correct
4 None are correct
Explanation:
Each myosin (thick) filament is also a polymerised protein. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
BIOXI20: LOCOMOTION AND MOVEMENT
340336
Myosin is made up of monomeric proteins called
1 Troponin
2 Tropomyosin
3 Meromyosin
4 Both (1) and (3)
Explanation:
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called Meromyosin constitute one thick filament.
BIOXI20: LOCOMOTION AND MOVEMENT
340337
The functional unit of contraction is a
1 Portion of myofibril between two successive Z-lines
2 Portion of myofibril between two successive M-lines
3 Centre of the H-zone
4 Centre of the I-band
Explanation:
The portion of the myofibril between two successive ' Z ' lines is considered as the functional unit of contraction and is called a sarcomere.
340333
In the rest state, a subunit of troponin masks:-
1 Active binding sites for actin on the myosin filaments
2 Active binding sites for myosin on the actin filaments
3 Active binding sites for myosin on the myosin filaments
4 Active binding sites for actin on the actin filaments
Explanation:
During muscle contraction, calcium released from sarcoplasmic reticulum will bind to subunit of troponin of thin filament, binding of troponin to thin filament will expose (unmask) binding site for myosin.
BIOXI20: LOCOMOTION AND MOVEMENT
340334
Component of actin filament of a sarcomere is
1 Actin, troponin and tropomyosin
2 Troponin and actin
3 Actin and myosin
4 Myosin and troponin
Explanation:
Each actin (thin) filament is made of two ' F ' (filamentous) actins helically wound to each other. Each ' F ' actin is a polymer of monomeric ' G ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' F ' actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340335
Select the correct answer I. Each myosin (thin) filament is also a polymerised protein II. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for troponin.
1 Only I is correct
2 Only II is correct
3 Both are correct
4 None are correct
Explanation:
Each myosin (thick) filament is also a polymerised protein. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
BIOXI20: LOCOMOTION AND MOVEMENT
340336
Myosin is made up of monomeric proteins called
1 Troponin
2 Tropomyosin
3 Meromyosin
4 Both (1) and (3)
Explanation:
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called Meromyosin constitute one thick filament.
BIOXI20: LOCOMOTION AND MOVEMENT
340337
The functional unit of contraction is a
1 Portion of myofibril between two successive Z-lines
2 Portion of myofibril between two successive M-lines
3 Centre of the H-zone
4 Centre of the I-band
Explanation:
The portion of the myofibril between two successive ' Z ' lines is considered as the functional unit of contraction and is called a sarcomere.
340333
In the rest state, a subunit of troponin masks:-
1 Active binding sites for actin on the myosin filaments
2 Active binding sites for myosin on the actin filaments
3 Active binding sites for myosin on the myosin filaments
4 Active binding sites for actin on the actin filaments
Explanation:
During muscle contraction, calcium released from sarcoplasmic reticulum will bind to subunit of troponin of thin filament, binding of troponin to thin filament will expose (unmask) binding site for myosin.
BIOXI20: LOCOMOTION AND MOVEMENT
340334
Component of actin filament of a sarcomere is
1 Actin, troponin and tropomyosin
2 Troponin and actin
3 Actin and myosin
4 Myosin and troponin
Explanation:
Each actin (thin) filament is made of two ' F ' (filamentous) actins helically wound to each other. Each ' F ' actin is a polymer of monomeric ' G ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' F ' actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340335
Select the correct answer I. Each myosin (thin) filament is also a polymerised protein II. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for troponin.
1 Only I is correct
2 Only II is correct
3 Both are correct
4 None are correct
Explanation:
Each myosin (thick) filament is also a polymerised protein. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
BIOXI20: LOCOMOTION AND MOVEMENT
340336
Myosin is made up of monomeric proteins called
1 Troponin
2 Tropomyosin
3 Meromyosin
4 Both (1) and (3)
Explanation:
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called Meromyosin constitute one thick filament.
BIOXI20: LOCOMOTION AND MOVEMENT
340337
The functional unit of contraction is a
1 Portion of myofibril between two successive Z-lines
2 Portion of myofibril between two successive M-lines
3 Centre of the H-zone
4 Centre of the I-band
Explanation:
The portion of the myofibril between two successive ' Z ' lines is considered as the functional unit of contraction and is called a sarcomere.
340333
In the rest state, a subunit of troponin masks:-
1 Active binding sites for actin on the myosin filaments
2 Active binding sites for myosin on the actin filaments
3 Active binding sites for myosin on the myosin filaments
4 Active binding sites for actin on the actin filaments
Explanation:
During muscle contraction, calcium released from sarcoplasmic reticulum will bind to subunit of troponin of thin filament, binding of troponin to thin filament will expose (unmask) binding site for myosin.
BIOXI20: LOCOMOTION AND MOVEMENT
340334
Component of actin filament of a sarcomere is
1 Actin, troponin and tropomyosin
2 Troponin and actin
3 Actin and myosin
4 Myosin and troponin
Explanation:
Each actin (thin) filament is made of two ' F ' (filamentous) actins helically wound to each other. Each ' F ' actin is a polymer of monomeric ' G ' (Globular) actins. Two filaments of another protein, tropomyosin also run close to the ' F ' actins throughout its length. A complex protein Troponin is distributed at regular intervals on the tropomyosin. In the resting state a subunit of troponin masks the active binding sites for myosin on the actin filaments.
BIOXI20: LOCOMOTION AND MOVEMENT
340335
Select the correct answer I. Each myosin (thin) filament is also a polymerised protein II. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for troponin.
1 Only I is correct
2 Only II is correct
3 Both are correct
4 None are correct
Explanation:
Each myosin (thick) filament is also a polymerised protein. The globular head is an active ATPase enzyme and has binding sites for ATP and active sites for actin.
BIOXI20: LOCOMOTION AND MOVEMENT
340336
Myosin is made up of monomeric proteins called
1 Troponin
2 Tropomyosin
3 Meromyosin
4 Both (1) and (3)
Explanation:
Each myosin (thick) filament is also a polymerised protein. Many monomeric proteins called Meromyosin constitute one thick filament.
BIOXI20: LOCOMOTION AND MOVEMENT
340337
The functional unit of contraction is a
1 Portion of myofibril between two successive Z-lines
2 Portion of myofibril between two successive M-lines
3 Centre of the H-zone
4 Centre of the I-band
Explanation:
The portion of the myofibril between two successive ' Z ' lines is considered as the functional unit of contraction and is called a sarcomere.
