Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Enzyme Reactions and pH Activity Worksheet, Exercises of Biochemistry

Answer each questions from given context only

Typology: Exercises

2020/2021

Uploaded on 04/20/2021

danmarino
danmarino 🇺🇸

4.2

(11)

267 documents

1 / 2

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Enzyme Reactions Name_______________________
Period _____ Date____________
Sucrose is a sweetener found in many candies. It is a carbohydrate disaccharide made up of glucose and
another sugar called fructose. When we eat sucrose, it must be digested or broken down into smaller
substances, which our cells can absorb. An enzyme (protein) called sucrase speeds up this chemical reaction
by breaking the chemical bond in sucrose, the substrate. High heat and strong acids or bases destroy the
enzyme and would stop the chemical reaction. The only way to make the reaction go faster is to add more
enzymes. Scientists support the “lock and key” model below for how an enzyme speeds up chemical reactions.
The letters “ase” at the end of words help us identify enzymes.
1. Label A-E directly on the picture above: active site, substrate, enzyme, glucose and fructose
2. What is the substrate in the picture above?
3. What is the name of the enzyme?
4. What 3 letters in the enzyme’s name tells that it is an enzyme?
5. How can you tell from the diagram that sucrase is not used up during the chemical reaction?
6. What type of proteins speed up a chemical reaction?
7. How are enzymes destroyed?
pf2

Partial preview of the text

Download Enzyme Reactions and pH Activity Worksheet and more Exercises Biochemistry in PDF only on Docsity!

Enzyme Reactions Name_______________________ Period _____ Date____________

Sucrose is a sweetener found in many candies. It is a carbohydrate disaccharide made up of glucose and another sugar called fructose. When we eat sucrose, it must be digested or broken down into smaller substances, which our cells can absorb. An enzyme (protein) called sucrase speeds up this chemical reaction by breaking the chemical bond in sucrose, the substrate. High heat and strong acids or bases destroy the enzyme and would stop the chemical reaction. The only way to make the reaction go faster is to add more enzymes. Scientists support the “lock and key” model below for how an enzyme speeds up chemical reactions. The letters “ ase ” at the end of words help us identify enzymes.

  1. Label A-E directly on the picture above: active site, substrate, enzyme, glucose and fructose
  2. What is the substrate in the picture above?
  3. What is the name of the enzyme?
  4. What 3 letters in the enzyme’s name tells that it is an enzyme?
  5. How can you tell from the diagram that sucrase is not used up during the chemical reaction?
  6. What type of proteins speed up a chemical reaction?
  7. How are enzymes destroyed?

pH and Enzyme activity

Experiments were designed to study the effect of pH on the rate of enzyme action for 2 different enzymes found in animals, Enzyme A and Enzyme B. Enzyme A is found in the stomach and digests meats. Enzyme B is found in the intestine and digests facts. Use the graph to answer the following questions

Enzyme A and B Activity

pH

Relative Reate of

Enzyme Action

(percent)

Enzyme A Enzyme B

  1. At what pH is Enzyme A working at its maximum rate?
  2. Since Enzyme A is found in the stomach, what is the probable pH of the stomach?
  3. At what pHs does Enzyme A not work?
  4. At what pH is Enzyme B working at its maximum rate?
  5. Since Enzyme B is found in the intestine, what is the probable pH of the intestine?
  6. If Enzyme A were produced in the intestine, would this enzyme still carry out its usual function of digestions? Explain.