PhysioEx 9.1 is a simulation software that allows users to perform virtual experiments and explore physiological concepts. Exercise 2, Activity 4 focuses on the effect of temperature on enzyme activity.
Enzymes are proteins that catalyze chemical reactions in the body, and they play a crucial role in many physiological processes. One of the key factors that can affect enzyme activity is temperature. In general, increasing the temperature can increase the rate of enzyme-catalyzed reactions, but there is a point at which the enzyme becomes denatured and can no longer function properly.
In Activity 4 of Exercise 2, users can observe the effect of temperature on the activity of the enzyme catalase, which is found in the liver and breaks down hydrogen peroxide (a toxic byproduct of cellular metabolism) into water and oxygen. By adjusting the temperature of the reaction mixture, users can see how the rate of the reaction changes.
As expected, increasing the temperature from 37°C (the body's normal temperature) to 45°C results in an increase in the rate of the reaction. However, further increases in temperature beyond 45°C lead to a decrease in the rate of the reaction. This is because the enzyme has become denatured and can no longer function properly at higher temperatures.
Overall, Activity 4 of Exercise 2 helps users to understand the important role that temperature plays in enzyme activity, and how small changes in temperature can have significant effects on physiological processes. It also illustrates the importance of enzymes in maintaining homeostasis in the body, as well as the dangers of exposing enzymes to extreme conditions that can denature them.
Skeletal muscle twitch- one contractile response to a single action potential. PhysioEx Exercise 2 Activity 1 Note that a decrease in maximal force indicates muscle fatigue is developing. This occurred because the voltage increased and was delivered to the whole muscle, so more fibers were then activated which causes total force produced by the muscles to increase. The term motor unit refers to You correctly answered: c. Physioex Exercise 2 Activity 1 Pdf Physioex Lab Report Exercise 2 Skeletal Muscle Physiology Activity 1 The Muscle Twitch And The Latent Period Name Course Hero Physioex 9. How does increasing muscle fiber length affect force of muscle contraction See Table 6 Stimulation Frequency and Contraction Force See Graph Effect of Stimulation Frequency on Contraction Force 8. Controlled Variables Effect of Stimulation Frequency on Contraction 1.
Question 31 of 32 4. The dosage of hormone replacement will be determined by the. Overall, a well-written technical proposal should provide a clear and concise overview of the project and its benefits, as well as a detailed plan for how it will be implemented. Phase 1- sodium channels close, potassium channels close, decrease in potassium and sodium. If you were using your bicep muscles to curl a 7-kg dumbbell, when would your muscles be contracting isotonically? They are essential for maintaining the many metabolic processes that keep the body functioning properly. These myocytes contain thicker fibers that facilitate the release of calcium, the generation of an action potential within the sarcolemma, and the subsequent production of a muscle contraction.
During the latent period for an isometric contraction c. Does the duration of the latent period change with different stimulus voltages? Posts: 1 Rep: 0 0 3 years ago 3 years ago. Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. Your answer: Maximal shortening velocity is only attained with a minimal load. There will be a limit to this increase.
Your answer: Because as the weight of the load increases, the latent period time increases and the shortening velocity speed decreases. Exercise 9: Renal System Physiology: Activity 2: The Effect of Pressure on Glomerular Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Overall, Activity 2 of Exercise 2 helps students understand the fundamental concepts of diffusion and osmosis, which are important processes that occur in cells and are essential for maintaining homeostasis. Stimulus frequency refers to You correctly answered: b. This is because the solutes create an osmotic pressure that prevents the movement of water. Feedback: Learning Objective: Describe how the human body excretes excess glucose. The objective of this activity is to understand how the concentration of solutes on either side of the membrane affects the movement of water molecules through the membrane.
There will be a limit to this increase. Your answer: The force is generated from stretching the muscle caused by the recoil of the tissue. Experiment Data: Voltage Length Active Force Passive Force Total Force Latent Period 0. What was the optimal muscle length muscle length that generated the maximum force 6. Skeletal muscles are composed of hundreds to thousands of individual cells called You correctly answered: c.
Which of the following forces promotes filtration? Please review Lab Exercise 4, Activity 2. Download: Physioex 8 0 exercise 7 activity 2 at Marks Web of Books. Muscle tension increases and decreases during a state of unfused tetanus. Exercise 5: Cardiovascular Dynamics: Activity 2: Studying the Effect of Blood Viscosity on Blood Flow Rate Lab Report. There will be no limit to this increase. Yes, it is greater than the previous stimulations. What structure was stimulated to cause a muscle contraction 5.
Your answer: The shortening distance decreased with the heavier load. My prediction was on par. It is often used in the fields of engineering, construction, and technology, and it is designed to provide a clear and concise description of the project, as well as the benefits and costs associated with it. An increase in muscle length will decrease the total force. Stimulus frequency refers to You correctly answered: b. The Bohr radius of the H atom is 52.
It should clearly describe the issue and explain why it is important to address it. Activity 2: PhysioEx — Exercise 9 — Renal System Physiology. During cross bridge cycling in skeletal muscle, force is created by the You correctly answered: c. Understanding these processes is essential for the diagnosis and treatment of various physiological conditions, as well as for the development of new drugs and therapies. Skeletal muscle fibers are innervated stimulated by c.
Muscle tension increases and decreases during a state of unfused tetanus. How well did the results compare with your prediction? Which of the following is not a formed element? How do you think the human heart would respond? Which of the following forces promotes filtration? Finally, students learn that when the concentration of solutes is higher on one side of the membrane but the membrane is not permeable to those solutes, there is still no net movement of water through the membrane. The healthcare provider will inform her that You correctly answered: a. When a skeletal muscle is repetitively stimulated, twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. From there a longer time to achieve maximum tension increases. .
The number of motor fibers that available influence the motor recruitment. Controlled Variables Effect of Muscle Length on Contraction 1. It should also include any contingencies or risk management strategies. Is the total muscle force generated by the higher frequency stimulation greater than the force generated in previous stimulations? Skeletal muscle fibers are innervated stimulated by You correctly answered: c. A, B, and C are correct. With a team of extremely dedicated and quality lecturers, physioex 9.