You’ve setup an in-vitro experiment to measure molecular motors and have an irreversibly binding ATP analogue. After conducting the experiment, you find that this irreversibly binding ATP analog stops motor function. Explain why that is the case.

Q: During one cross-bridging cycle in striated muscle one ATP molecule is hydrolyzed. Explain the two…

A: In striated muscles, during a muscle contraction, tropomyosin has to change its conformation to…

Q: requires

A: Answer:- Striated and smooth muscle activation differ because: Let's , elaborate on all the options…

Q: Compare and contrast the major biochemical and mechanical properties of the three primary types of…

A: Skeletal muscle represents a striated muscle which is controlled by the somatic nervous system…

Q: What would be the consequences of actin filament assembly/disassembly if a mutation prevented actins…

A: Actin belongs to the globular family of proteins that forms microfilaments present in eukaryotic…

Q: Give two examples of biological functions that are enabled by microfilaments or microtubules…

A: Cytoskeleton        It is a complex of filaments and tubules that is mainly enlarged all around the…

Q: You discover a mutant mouse whose skeletal muscles do not work properly.  You remove a piece of…

A: Acetylcholinesterase or acetylhydrolase is a cholinesterase enzyme primarily found at neuromuscular…

Q: Strabismus is an eye condition in which one eye is not aligned correctly (see pictures below). One…

A: Strabismus, a condition characterized by misalignment of the eyes, results from an imbalance in the…

Q: Botox  has become popular for reducing wrinkles.  It is a dilute solution of a toxin which inhibits…

A: Botox injections block specific chemical signals from nerves, for the most part signals prompt…

Q: How fast could a non-muscle cell make a contraction compared to a muscle cell if the relative rates…

A: In muscle contraction, actin filaments are associated with myosin filaments to perform various kinds…

Q: "Motor neurons trigger action potentials in muscle cell membranes that open voltage-sensitive Ca2+…

A: Introduction: The contraction of the muscle is significantly influenced by calcium ions. When…

Q: When fatigue occurs, ATP is still present in the cell. What is the explanation for this?

A: Adenosine Triphosphate or ATP is the principal substance for storing and sending energy in cells. It…

Q: you discover that myoglobin has an isoelectric point of 6.8 and chymotrypsin has an isoelectric…

A: Isoelectric point (pI) of a protein is the pH at which the net charge of the protein is 0. When pH…

Q: Actin filaments in a test tube: O a. undergo disassembly if the concentration of free ATP-bound…

A: In cells, microtubules, actin filaments, and intermediate filaments are much more complex than in a…

Q: Describe a negative feedback mechanism for controlling a rising cytosolic Ca2+ concentration in…

A: Numerous metabolic reactions occur in a cell. These reactions may require an enzyme catalyst. The…

Q: ach

A: B. ACH or Acetylcholine is the only neurotransmitter that is present in the somatic muscular…

Q: Explain the term The sliding-filament assayis used to detect myosin-powered movement.

A: The sliding filament theory was developed to understand the process of muscle contraction. When…

Q: There are no known motor proteins that move along intermediate filaments, in contrast to the variety…

A: The cytoskeleton does the mechanical support, motility and maintenance of the cellular structure in…

Q: Calculate the free energy required to move 1 mol of K* ions from inside the cell (where…

A: To calculate the free energy required to move 1 mol of K+ ions from inside the cell to the outside,…

Q: When ATP levels return to normal after intense muscle activity, is creatine predominantly…

A: During intense muscle activity excess and immediate amount of ATP is required, in this case the…

Q: One of the toxins produced by Bacillus anthracis (the cause of anthrax) is known as EF, or edema…

A: Bacteria are a group of prokaryotic microscopic single celled organisms. They live in diverse…

Q: Define and describe the function of slow oxidative myofibers.

A: Myofibers are the basic contractile unit of muscle tissue, and each myofiber is composed of many…

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: What are the characteristics of motor proteins? How do organisms use them?

A: Introduction: Proteins are one of the major biomolecules consist of long chains of amino acids. The…

Q: What happened to your energy & ability to pinch the clothespin as you progressed through each trial?…

A: As per our guidelines we are not allowed to answer more than one question at a time please ask rest…

Q: List the 3 major classes of motor proteins:

A: Molecular motors that move along the cytoplasm of animal cells are known as Motor proteins. They use…

Q: If a muscle cell’s sarcoplasmic reticulum had little to no Ca2+, could the muscle cell still produce…

A: Ca2+ ions play an important role in muscle contraction by creating interactions between the…

Q: Binding sites on actin open when

A: The sarcomere is the part of the sarcostyle that is present between the two Z lines. It is the…

Q: a) Why are muscles not in a contracted state all the time? b) Several hours after the death of an…

A: Muscles These are defined as the soft tissues that are involved in the movement of the body and in…

Q: Your unfortunate friend Greta has a condition where her Ca2+-ATPase works too fast. She comes to…

A: Calcium ions (Ca2+) play a crucial role in muscle contraction. They are stored in the sarcoplasmic…

Q: high levels of Pi and no other metabolites, what would you observe

A: Muscle fatigue is a common complaint in clinical practice in humans. Muscle fatigue is known as an…

Q: In muscle cells, magnesium ions compete with calcium ions for binding sites on troponin molecules.…

A: Calcium triggers contraction by reaction with regulatory proteins that in the absence of calcium…

Q: Skeletal muscle cells undergo contractions based on a molecular mechanism involving: 1)the sliding…

A: The skeletal muscle cells contract by using myosin and actin filaments. These cells are accountable…

Q: Describe the two mechanisms by which muscle glycogen is broken down to glucose (glycogenolysis) for…

A: The question is to discuss two mechanisms by which muscle glycogen is broken down to glucose…

Q: During muscle contraction, some energy is supplied from creatine phosphate. Which of the following…

A: Muscle contraction occurs when tension-generating sites within muscle cells are activated.

Q: Explain how cofilin distinguish old filaments from new ones.

A: What is cofilin? By expanding the number of filament endings out of which actin monomers could be…

Q: How are motor neurons involved in muscle contractions? Select all that apply. The release of calcium…

A: It is a neuron whose cell body is located in the motor cortex, brainstem or the spinal cord and…

Q: Why is adenosine triphosphate (ATP) used for muscle contraction?

A: Muscle contraction is a process in which muscle shortening occurs due to the movement of the actin…

Q: Describe the following Alpha gamma coactivation Golgi tendon apparatus

A: Muscle tissue plays a vital role in providing body movements through the contraction of muscles.…

Q: Describe in details the biochemical and mechanochemical series of events that enables motor neurons…

A: Muscle contraction means activation of tension-generating sites within our muscle cells and the…

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: Explain the structure of dynein and kinesin and how their structures aid in organelle movement…

A: Dynein and kinesin are two of the cellular major motor proteins involved in the long range transport…

Q: Neurofilament proteins assemble into long, intermediate filaments , found in abundance running along…

A: Neurofilaments (NFs) are heteropolymers made up of four subunits (NF-L [neurofilament light], NF-M…

Q: A muscle is attempting to avoid being eaten by a starfish by tightly closing its shell. Is this an…

A: Introduction Muscle tone is the amount of tension in the skeletal muscles at rest, and it helps to…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.