In PhysioEx 9.1, Exercise 9, Activity 3, students are asked to investigate the effect of pH on enzyme activity using the enzyme catalase. This activity allows students to understand the role of pH in enzyme function and how changes in pH can affect the rate of enzyme-catalyzed reactions.
Catalase is an enzyme found in many living cells, including those of plants and animals. It plays a vital role in the breakdown of hydrogen peroxide, a toxic compound that can damage cells if left unchecked. Catalase speeds up the reaction that breaks down hydrogen peroxide into water and oxygen, helping to protect cells from harm.
In Activity 3, students are asked to measure the activity of catalase at different pH levels. To do this, they first prepare a solution of hydrogen peroxide and a buffer solution of varying pH. They then add a small amount of catalase to the solution and measure the rate at which oxygen is produced as the enzyme breaks down the hydrogen peroxide.
By measuring the rate of oxygen production at different pH levels, students can observe the effect of pH on enzyme activity. They should find that catalase is most active at a pH of around 7, which is close to the neutral pH of pure water. At lower or higher pH levels, the activity of catalase decreases.
This activity demonstrates that enzymes are sensitive to changes in pH and that they function optimally within a narrow pH range. It also highlights the importance of maintaining the proper pH within cells, as changes in pH can affect the activity of enzymes and, in turn, the overall function of the cell.
In conclusion, PhysioEx 9.1, Exercise 9, Activity 3 is an important learning opportunity for students to understand the role of pH in enzyme activity and how changes in pH can affect the rate of enzyme-catalyzed reactions. By performing this activity, students can gain a deeper appreciation for the complex mechanisms that support life at the cellular level.
Physioex 9.1 Exercise 3 Activity 1 Review Sheet Answers
Review the data to ensure that it resembles Figure 7 if it does proceed to the next section. Which of the following has the most negative voltage? You correctly answered: b. ¿Es de Miami Juan? It depends on the resting permeability of the membrane to ions and on the intracellular and extracellular concentrations of those ions to which the membrane is permeable. Your answer: Based on the data if ADH is unavailable urine concentration cannot still vary. Timms Homework help for , Writing based To determine the quantity of hemoglobin in a bloodstream test You properly responded to: electronic. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This is because ADH increases the ability to reabsorb water, which increases the volume of the blood.
Physioex 9.1 Exercise 3 Activity 5 Answers
However, when only ADH is added, the data shows an increase in urine concentration from 100 mOsm, at the baseline value, to 1200 mOsm. You correctly answered: There was more potassium secretion into the distal tubule and more water reabsorption in the collecting duct. Your answer: In order to reabsorb sodium ions and not increase the volume of blood, you would have to decrease the amount of ADH. You correctly answered: The water volume in the urinary bladder is decreased, increasing the concentration of solutes such as potassium. .
Science/Math Homework Help & Textbook Solutions
Learn vocabulary, terms, and more with flashcards, games, and other study tools. Exercise 3: Neurophysiology of Nerve Impulses: Activity 1: The Resting Membrane Potential Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Experiment Results Predict Questions Which of the following has a role in altering the urine volume and concentration? Your answer: The resting period potential is a potential difference between the inside of the cell and the outside of the cell across the membrane. What is the difference between stimulus intensity and stimulus frequency? It decreases the net diffusion of K+. Discuss how a change in Na+ or K+ conductance would affect the resting membrane potential. Get homework help and answers to your toughest questions in biology, chemistry, physics, math, calculus, engineering, accounting, English, writing help, business, humanities, and more. .
