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during the cocking of the myosin head
Kayley Johns
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What energizes the power stroke in cross bridge cycle?
Hydrolysis of ATP
Where in the cross bridge cycle does ATP hydrolysis occur?
during the cocking of the myosin head
What role does tropomyosin play in cross bridge cycle?
The displacement of tropomyosin exposes the active sites of actin allowing cross bridge to form.
What are the processes in the water cycle called?
hydrolysis of water
What effect would BMD have on the cross bridge cycle?
Myosin heads would remain detached, unable to cock.
What occurs in the Krebs cycle?
the Krebs cycle, aka citric acid cycle, occurs in the mitochondrial matrix
At what stage in the cross-bridge cycle is ATP split into ADP and Pi?
Before the cross bridges of myosin can attach to actin.
In eukaryotic cells the Krebs cycle occurs in the .?
The Kreb's cycle occurs in the mitochondrial matrix of eukaryotic cells. In prokaryotic cells, which have no mitochondria, the Kreb's cycle occurs in the cytoplasm.
When during a cell cycle does Replication occur?
The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosisDNA replication occurs during the S phase of interphase.
How is wave summation achieved in vivo?
simply: Wave summation occurs when a second stimulus is applied before relaxation occurs completely. In depth: In order for a muscle to contract electrical shock or nerve impulse must cause voltage-sensitive tubule proteins (T-tubules) of sarcoplasmic reticulum to change shape and allow Ca2+ into cytosol. Ca2+ binds to troponin (changing its shape) allowing myosin (makes thick filaments) to attach to actin ( makes thin filaments). Myosin pulls itself along actin via ATP hydrolysis, this is called a cross bridge cycle, basically shortening of muscle. Before the contraction stops, another stimulus is sent to the muscle allowing more Ca2+ into the cytosol which keeps allowing cross bridge cycle. wave summation means the contractions are added together. thus increasing the force of the second stimuli. force will increase until the muscle reaches its threshold.
Where does the Krebs cycle occurs?
The Krebs cycle occurs in the mitochondrial matrix of the cell.The kreb cycle takes place in the matrix of the mitochondria.
The Krebs cycle occurs in which region of the mitochondrion?
The Krebs cycle occurs in the matrix of the mitochondrion.
