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- Compare and contrast plant and animal sensory and motor mechanisms. Use a Venn DiagramCompare and contrast plant and animal sensory and motor mechanisms. Give one example for each.How are motor neurons involved in muscle contractions? Select all that apply. The release of calcium ions into muscle fiber causes a shift in the proteins of thick filaments, allowing myosin to bind to actin. The release of calcium ions into muscle fiber causes a shift in the thin filaments, allowing myosin to bind to actin. A signal from the motor neuron leads to the release of calcium ions from the muscle fiber's sarcoplasmic reticulum. Muscle fibers respond to signals from motor neurons whose axon endings lie far from the muscle fiber.
- What is the mechanism possible for sensing muscle damage and triggering repair? Specifically in exercise and building muscle. Write full mechanism at the cellular level.Use the following information to answer the next question: In a classic experiment, the strength of a neural stimulus and the resulting muscle contraction are compared. A single motor neuron that sends a message to a muscle fibre is suspended. One end is attached to the muscle fibre, and the free end of the muscle fibre is attached to a mass. If an electrical stimulus is sufficient to cause an impulse in the neuron, the muscle will contract and lift the mass. The following data were obtained from the experiment. Strength of Stimulus (mV) Mass Lifted by Muscle (g) 1 2 10 3 10 4 Analyze the data and answer the following questions: 1. a. Define threshold potential and illustrate your definition with a specific example. What is the minimum stimulus required to reach the threshold potential for this neuron? Answer: Explain the all-or-none response. Predict the mass that could be lifted at 4 mV of stimuli. Explain your answer. b. Answer: Choose a specific example of a sensory receptor, and…Explain how researcher characterize and identify types of muscle fibers. What is an action potential? Where does the signal start and how does it move through the body to perform a muscle contraction? How does myelinated sheaths help propagate the speed of the action signal?
- First, explain how resting membrane potential is established in terms of ion concentration and electric charge. Next, explain the process of neural signal transmission from an alpha motor neuron to the muscle fiber. Do this by explaining how an AP is generated (ions and membrane proteins) at the neuron, how the signal is propagated, what happens at the axon terminal, what happens at the motor endplate, and explain all the molecular events that occur to cause muscle contraction.The sliding filament model depicts how myosin motors attached to actin lead to muscle contraction. This process proceeds in a precise series of events. Indicate which of the following shows the correct order of steps in the sliding filament model. Group of answer choices Myosin binds ATP; myosin tightly binds actin; power stroke; myosin releases actin Myosin binds GTP; myosin releases actin; power stroke; myosin tightly binds actin Actin binds ATP; power stroke; myosin tightly binds actin; actin releases ADP Actin binds ADP; myosin releases actin; power stroke; actin releases ADPWhat are the steps of the sliding filament model? Select all that apply. Sarcomeres are in a relaxed state, in which myosin-binding sites on actin are blocked. When a nervous signal excites the muscle, myosin-binding sites on actin open up and myosin binds to actin. The myosin heads hydrolyze ATP to ADP and P. The binding of myosin to actin releases phosphate and triggers a power stroke. ATP binds to myosin, and the myosin releases its grip on actin, returning to a relaxed state.
- Describe newell's model of constraints and give one example of each using a single motor situationCreate at least 6 analogies comparing (3) and contrasting (3) the processes involve in chemical and nervous control in plant animals. Example: Photoreceptor (Animal): Phototropism (Plants) (Both involved responding to light stimulus)Describe the structures and functions of actin-based motor proteins, myosins.