When calcium ions are present in the cytoplasm but not ATP, myosin heads will be: unbound in a high energy state bound to actin subunits in a low energy state unbound in a low energy state bound to actin subunits in a high energy state

Q: The monomeric G protein RhoA is important in generating contractility at the back of migrating…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: In the process of muscle contraction, which of the following steps immediately precedes the sliding…

A: Muscle cells are specialized for contraction. Muscles allow for motions such as walking, and they…

Q: Actin filaments in microvilli require the help of myosin so that they can associate with the…

A:

Q: Predict which fractions will contain actin and which will contain myosin, and predict the degree of…

A: All types of muscle tissue contain actin and myosin. Muscle contractions and movements are generated…

Q: A thick filament is made up of Select one: a. myosin and regulatory filaments b. actin and…

A: Muscular contraction is caused by the interaction between actin and myosin as they temporarily bind…

Q: Myosin heads bend when attached to actin

A: Correct option is C  Myosin heads bend when attached to actin

Q: Certain multi-headed myosins bind cooperatively to actin filaments. The binding interaction is…

A: As seen in the graph, when one aminoacid asp residue changes into leucine amino acid in eachs…

Q: Which of the following is NOT associated with cardiac muscle contraction?   Contraction requires…

A: Cardiac muscle is one of the three types of vertebrate muscles. It is an involuntary, striated…

Q: A)Fill in the blanks below regarding sarcomeres: In a sarcomere, thin filaments are composed…

A: Sarcomere is the functional unit of striated muscle. Our skeletal muscle is made up of sacromeres .…

Q: Put these events in the correct chronological sequence: 1. End-plate potentials trigger action…

A: The contraction of the muscle is led by two conditions which include an increase in the muscle…

Q: Curare is a dangerous poison extract from plants that can block the binding site of Acetylcholine…

A: The conditions which likely to diminish or completely prevent tension production are 1. Reduced…

Q: Muscle contraction involves a protein conformational change called the power stroke. Where…

A: Each myosin motor protein possesses ATPase activity and functions in a cyclical manner that couples…

Q: number graded recruitment constant summation contraction Not all muscle contractions are of equal…

A: The muscle fiber helps in the process of muscle contraction, which helps in the movement.  When the…

Q: For relaxation to occur, A. calcium leaves the sarcoplasmic reticulum, and troponin binds calcium…

A: The muscle contraction and relaxation are regulated by the concentration of calcium ions released…

Q: Which statement or statements describe why depletion of ATP after death leads to rigor mortis?

A: Rigor mortis is the third phase of death. It is one of the unmistakable indications of death,…

Q: Myosin II action differs from that of kinesin in that one of the kinesin heads is always in contact…

A: Introduction Motor motion, including as contractions and expansions, is controlled by myosin. Muscle…

Q: ATP is a limited source of energy for skeletal muscle contraction. The cell has other ways of…

A: ATP is required for muscle contraction. Four sources of this substance are available to muscle…

Q: Myosin are motor proteins that drive forces and movement on actin filaments.

A: Answer:  MYOSIN = These are the proteins , found in muscle cells and primarily plays a major role in…

Q: Which of the following is FALSE? Muscle cells contain myosin II, which is responsible for…

A: option c. Incorrect Myosin 1 is not only the single head domain protein but Myosin9 also a single…

Q: During the cross-bridge in muscle cells, myosin motors hydrolyzes ATP as a fuel to create a pulling…

A: Skeletal muscles are a special type of muscles made up of contractile tissue. They are a type of…

Q: Rigor mortis (the stiffening of muscles fibers several hours after death) is directly due to the…

A: Rigor Mortis  It is one of the recognisable signs of death, caused by chemical changes in the…

Q: In muscle cells, myosin molecules continue moving along actin molecules as long as: "A ATP is…

A: As per batleby guidelines we have to answer only first questions: You may repost rest of the…

Q: What do the calcium ions that are released into the cytoplasm during contraction bind to?…

A: At the point when the muscle is stimulated during contraction, calcium particles are delivered from…

Q: Which of the following CORRECTLY describes a similarity when comparing actin filaments and…

A: The cell exhibits the cytoskeleton, which helps to provide a framework of the cell. They help to…

Q: Which of the following regions of a sarcomere at rest is characterized by the presence of myosin…

A: Myofibrils are made up of sarcomeres,  It gives striated appearance to the skeletal muscles because…

Q: Put the steps of excitation-contraction in order: 1 Myosin "heads" pivot, cause [ Choose ] Calcium…

A: The mechanism of contraction of skeletal muscle was best explained through 'sliding filament…

Q: In myogenesis, the assembling sarcomeres are integrated with the extracellular matrix (composed of…

A: Myogenesis is the process of development of muscular tissue during embryogenic development.

Q: The ATPase activity of myosin protein is found in,

A: Myosin is a class of molecular motor proteins that plays an essential role in the contraction of the…

Q: What step DIRECTLY causes a sarcomere to shorten? cross- bridge formation  calcium transport into…

A: A sarcomere is the unit of muscle fiber responsible for contraction. Each sarcomere is composed of…

Q: The depletion of ATP in muscle cells causes ____. myosin heads to remain bound to actin…

A: answer:1 The depletion of ATP in muscle cells causes calcium ions to be released from the…

Q: Transmission of electrical signals in nerve and muscle cell is mediated by opening and closing of:…

A: Impulse transmission in the human body is a prerequisite in order for the coordination functions to…

Q: In which type(s) of muscle cells does each cell have its own neuromuscular junction?…

A: As per the guidelines, first is answered. Cells called muscle fibres are composed of skeletal muscle…

Q: What happens when myosin filaments hydrolyze ATP molecules in muscles?    a. Actin–myosin complexes…

A: The specialised cytoplasm of a muscle fiber is called sarcoplasm which contain fine thread like…

Q: 51- are links between the Filamentous F-actin of thin filaments and myosin heads of thick filaments.…

A: Introduction Muscle contraction is the activation of tension-generating sites within muscle cells,…

Q: An ion that is essential for muscle contraction is Ca2+.  Which of the following statements about…

A: Introduction  Neurotransmitters released by the motor neuron that innervates a muscle cell cause it…

Q: Which of these steps in the production of force by myosin is INCORRECT? The binding of ATP to the…

A: As per our honor code, we are authorized to answer one question at a time, since you have not…

Q: For the myosin head to form cross bridges with actin, it is necessary for to bind to actin. a)…

A: When calcium atoms bind to the globular molecules like my os in protein, they change shape and this…

Q: What are the steps of the sliding filament model? Select all that apply. Sarcomeres are in a relaxed…

A: Following are the steps of contraction of the disease 1. Release of neurotransmitter at motor…

Q: When an action potential arrives at the neuromuscular junction, acetylcholine is released into the…

A: Muscle is the tissue present in the body that helps for movement and change shape. There are mainly…

Q: Cofilin depolymerizes older actin filaments since it prefers to.. . bind to GTP-containing actin…

A: Cofilin is a fundamental actin administrative protein that constitutively cuts off actin filaments,…

Q: This thick filament motor protein composed of 6 polypeptide chains uses ATP hydrolysis to interact…

A: Skeletal muscles are attached with the skeleton. Muscle is made up of contractile, structural and…

Q: Actin exits in two forms, a globular G form ( the free subunit) and a filamentous Fform( assembled…

A: Answer: ACTIN = This is a protein that forms microfilaments and are present in all eukaryotic cells,…

Q: The A-band includes overlapping myosin fibers only both actin and myosin fibers actin, troponin and…

A: Muscle contraction Actin and myosin are proteins that are found in the muscles, which work together…

Q: In the presence of myosin cross-bridges are able to bind to complementary sites on the actin…

A: Every skeletal muscle is composed of my 5 deals full stop this my fibrils are composed of my…

Q: Myosin II has a duty ratio of 10 percent, and its step size is 8 nm. In contrast, myosin V has a…

A: Myosin-II (also known as conventional myosin) is a type of myosin. It is in charge of the production…

Q: On the molecular level, why does lifting weights consume energy?  A. To contract a muscle,…

A: ANSWER;- c) To contract a muscle, myosin binds and pulls actin, ATP binding, and hydrolysis are…

Q: Progeria is a rare disease that causes accelerated aging and is due to a defect in ______. \ actin…

A: Progeria is also known as Hutchinson-Gilford syndrome is a kind of progeroid illness. Progeroid…

Q: Explain the concept of the following in regard to muscle cells: power stroke does not need to be a…

A: The process of muscle contraction is initiated when calcium ions bind to troponin protein complex.…

Defense Mechanism

Circumstances influence and compel people to behave in a certain way. One such behavior is a defense mechanism. It is employed by people to escape from unpleasant circumstances, thoughts and actions. Defense mechanisms are, thus, psychological strategies that help to avert and avoid unwanted feelings such as guilt or shame and situations such as threat and danger.