How does environmental ph affect an enzyme

Image courtesy of WikiMedia Commons. Browse Subjects. Study with Hours. SAT Exam Prep. ACT Exam Prep. College Resources. AP Trivia. Sign in Sign up. AP Bio. Unit 3. Caroline Koffke. Share Bookmark.

See Units. Changes in the environment will affect the speed in which an enzyme functions. Temperature is able to speed up and slow down reactions. Usually, when the temperature is very cold, molecules are moving more slowly, and there are less opportunities for an enzyme and substrate to bump into one another.

The most favorable pH value - the point where the enzyme is most active - is known as the optimum pH. This is graphically illustrated in Figure Extremely high or low pH values generally result in complete loss of activity for most enzymes. As with activity, for each enzyme there is also a region of pH optimal stability.

In addition to temperature and pH there are other factors, such as ionic strength, which can affect the enzymatic reaction. Each of these physical and chemical parameters must be considered and optimized in order for an enzymatic reaction to be accurate and reproducible. Example Question 8 : Enzymes. Possible Answers: High temperatures will change the shape and functionality of proteins.

Increasing the temperature will increase the activation energy. Increasing the temperature will decrease the activation energy. Heat will shift the equilibrium to the left, favoring the reactant side. Correct answer: High temperatures will change the shape and functionality of proteins.

Explanation : There is an optimum temperature at which an enzyme is most effective. Example Question 9 : Enzymes.

Which of the following characteristics affects the function of an enzyme? Possible Answers: None of these. Correct answer: All of these. Explanation : Temperature, pH, and substrate concentration all affect the function of an enzyme; therefore, the correct answer is all of these. Example Question 10 : Enzymes.

Which of the following statements about enzymes is correct? Possible Answers: They are polymers of carbohydrates. Correct answer: They function under a narrow pH range.

Explanation : The correct answer to this question is they function under a narrow pH range. Copyright Notice. View AP Biology Tutors. Salvador Certified Tutor. Cheyenne Certified Tutor. Meghan Certified Tutor. Report an issue with this question If you've found an issue with this question, please let us know. Do not fill in this field.

Louis, MO Or fill out the form below:. Company name. Copyright holder you represent if other than yourself. I am the owner, or an agent authorized to act on behalf of the owner of an exclusive right that is allegedly infringed.

I have a good faith belief that the use of the material in the manner complained of is not authorized by the copyright owner, its agent, or the law. This notification is accurate.