0
What else can I help you with?
What gene indicates that yeasts and humans share a common ancestor?
The gene that indicates yeasts and humans share a common ancestor is the ribosomal RNA gene. This gene is highly conserved across different species and is used in phylogenetic studies to understand evolutionary relationships. By comparing the sequence of this gene in yeasts and humans, scientists have been able to demonstrate their shared ancestry.
What are the thick protein filaments in the cell made of?
The thick protein filaments in a cell are primarily made of a protein called myosin. Myosin filaments are involved in muscle contraction and various other cellular processes such as cell motility and cytokinesis.
Which proteins found myofilaments contains the cross bridge?
The two muscle filaments are Myosin and Actin. Myosin is the thicker of the two. When a muscle contracts, a hook like particle extends off the myosin and grabs the actin pulling it in causing the contraction/ tension of the muscle
What are the two contractile proteins of muscle?
The two contractile proteins of muscle are actin and myosin. Actin is a thin filament, while myosin is a thick filament. They interact with each other to generate the force required for muscle contraction.
Does ATP cause the detachment of myosin from actin?
No, ATP does not cause the detachment of myosin from actin. ATP is used to fuel the cross-bridge cycle in muscle contraction, providing the energy needed for myosin heads to form cross-bridges with actin. Detachment of myosin from actin is facilitated by a conformational change in the myosin head when ATP is hydrolyzed.
What gene indicates that yeasts and humans share a common ancestor?
The gene that indicates yeasts and humans share a common ancestor is the ribosomal RNA gene. This gene is highly conserved across different species and is used in phylogenetic studies to understand evolutionary relationships. By comparing the sequence of this gene in yeasts and humans, scientists have been able to demonstrate their shared ancestry.
Which myofilament has a binding site for myosin head?
The myofilament that has a binding site for the myosin head is actin. Actin filaments contain specific regions known as binding sites that interact with the myosin heads during muscle contraction. This interaction is crucial for the sliding filament theory, where the myosin heads pull the actin filaments to shorten the muscle fiber. The binding of myosin to actin is regulated by the presence of calcium ions and the protein tropomyosin.
What protein makes up the thick filaments of myofibrils?
Myosin makes up the THICK filaments, and actin makes up the thin filaments of myofibrils.
What are the proteins are involved in muscle contraction?
Actin and myosin
What are the thick protein filaments in the cell made of?
The thick protein filaments in a cell are primarily made of a protein called myosin. Myosin filaments are involved in muscle contraction and various other cellular processes such as cell motility and cytokinesis.
What is the function of myosin?
Myosin is responsible for actin-based muscular mobility/contraction.
Binding of the myosin heads sequentially prevents what?
myosin crossbridge binding
The thick filaments of muscle fibers are composed of what?
Myosin
What does the release of ADP and P from the myosin head cause?
The release of ADP and P from the myosin heads causes the myosin heads to change shape.
What substances causes the myosin head to change shape?
ATP (adenosine triphosphate) is the main substance that causes the myosin head to change shape during muscle contraction. When ATP binds to the myosin head, it energizes the myosin molecule and allows it to detach from actin, resetting the myosin head for the next contraction cycle.
How do proteins actin and myosin interact to make a muscle contract?
Myosin and Actin
What are the two types of myofilaments?
The two filaments involved are myosin and actin. Actin: is the framework and slides over the myosin filament when the muscle is shortened. myosin: is a thick filament Also a sacromere: is made up of the actin and myosin. It is the functional unit of a muscle fibre and extends from z line to z line. A muscle contraction: is many sacromeres shortening ( actin sliding over myosin)
