n an experiment you, the researcher, remove ATP from the system. What would be a
ID: 47488 • Letter: N
Question
n an experiment you, the researcher, remove ATP from the system. What would be a likely consequence of the lack of ATP on muscle contraction?
The tropomyosin filament would not be dislodged preventing contraction.
The cross bridges would remain linked and therefore contraction would stop
The cross bridges would break apart due to the presence of calcium ions enabling some contraction
The myosin heads would separate from the actin molecule due to the release of ADP that was previously present.
The tropomyosin filament would not be dislodged preventing contraction.
The cross bridges would remain linked and therefore contraction would stop
The cross bridges would break apart due to the presence of calcium ions enabling some contraction
The myosin heads would separate from the actin molecule due to the release of ADP that was previously present.
Explanation / Answer
Ans.) “The cross bridges would remain linked and therefore contraction would stop”
(Basically, ATP helps myosin to bind with actin by moving it to a higher-energy state and in a specific cocked position. This actin and myosin binding is carried out by cross-bridging (phosphate disassociates and the myosin is triggered and reached to a lower energy state when the sarcomere shortens). And when ATP is removed from the system, the linked bridge would still present.
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