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Byju's Answer
Standard XII
Biology
Excitation Contraction Coupling
During muscle...
Question
During muscle contraction, actin and myosin form:
A
actomyosin
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B
actoplasm
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C
plastosine
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D
myoplasmn
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Solution
The correct option is
A
actomyosin
During muscle contraction, actin and myosin form a complex called 'actomyosin'.
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Similar questions
Q.
During muscular contraction, the myosin head binds to the exposed active sites on actin to form a?
Q.
Name the ion responsible for masking active sites for myosin for cross-bridge activity during muscle contraction.
Q.
Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction
Q.
Assess the statements.
1. A-bands of the muscle is dark and contain myosin.
2. I-bands are the light bands and contain actin.
3. During muscle contraction the A-band contracts.
4. The part between the two Z-lines is called as sarcomere.
5. The central part of thick filament, not overlapped by thin filament, called H-zone.
Of the above statements.
Q.
Assertion: Calcium ions play a crucial role in muscle contraction.
Reason: Calcium ions bind troponin causing the displacement of tropomyosin, allowing the myosin head to bind actin.
Select the appropriate option:
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Standard XII Biology
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