Lesson 8: The Role of EnzymesFocus on InquiryScientists often make inferences. Recall that an inference is based on observations and previousknowledge. An inference is not data, but it should be consistent with the data.Recall that pH can affect the function of enzymes. A scientist was studying the digestive system ofalligators. Alligators have very acidic stomachs, but their intestines are closer to neutral. The scientistidentified two important enzymes in the digestive tract of alligators W-protease and T-protease.She conducted an investigation into how a change in pH affected the activity of each enzyme. At theconclusion of the investigation, she presented her findings in the line graph shown....Digestive Enzyme ActivityTan-protease--- Wx-protease461012pHBased on these data and your knowledge of enzymes, what inferences can you draw about whichenzyme is most likely to be active in the alligator intestine and which is most likely to be activein the stomach? Explain your response.63Duplicating any part of this book is prohibited by law.Enzyme Activity

Enzymes are the biological catalysts that helps in altering the rate of the reaction, without taking…

Lesson 8: The Role of Enzymes Focus on Inquiry Scientists often make inferences. Recall that an inference is based on observations and previous knowledge. An inference is not data, but it should be consistent with the data. Recall that pH can affect the function of enzymes. A scientist was studying the digestive system of alligators. Alligators have very acidic stomachs, but their intestines are closer to neutral. The scientist identified two important enzymes in the digestive tract of alligators-W-protease and Tm-protease. She conducted an investigation into how a change in pH affected the activity of each enzyme. At the conclusion of the investigation, she presented her findings in the line graph shown... Digestive Enzyme Activity Tan-protease Wr-protease --- 4 6 8 10 12 pH Based on these data and your knowledge of enzymes, what inferences can you draw about which enzyme is most likely to be active in the alligator intestine and which is most likely to be active in the stomach? Explain your response. Duplicating any part of this book Is prohlbited by law. Enzyme Activity

Lesson 8: The Role of Enzymes Focus on Inquiry Scientists often make inferences. Recall that an inference is based on observations and previous knowledge. An inference is not data, but it should be consistent with the data. Recall that pH can affect the function of enzymes. A scientist was studying the digestive system of alligators. Alligators have very acidic stomachs, but their intestines are closer to neutral. The scientist identified two important enzymes in the digestive tract of alligators-W-protease and Tm-protease. She conducted an investigation into how a change in pH affected the activity of each enzyme. At the conclusion of the investigation, she presented her findings in the line graph shown... Digestive Enzyme Activity Tan-protease Wr-protease --- 4 6 8 10 12 pH Based on these data and your knowledge of enzymes, what inferences can you draw about which enzyme is most likely to be active in the alligator intestine and which is most likely to be active in the stomach? Explain your response. Duplicating any part of this book Is prohlbited by law. Enzyme Activity

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter16: The Body's System

Section: Chapter Questions

Problem 2ACQ: Figure 16.7 Which of the following statements about the digestive system is false? a. Chyme is a...

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The catalytic activity of enzymes depends on the presence of appropriate environmental conditions. Pepsin is a digestive enzyme found in the stomach and facilitates the digestion of large proteins. If pepsin is removed from this acidic environment of the stomach and is instead placed in a more basic environment, it will cease to function. Describe the specific effect that a change in environmental pH will have on pepsin and explain how this change can lead to inhibition of its catalytic activity. Respond in 4 to 6 complete sentences.
BIOMOLECULES Observe what happens after chewing a flavored gum. What happened to the taste of the chewing gum after chewing it in a minute? How is the taste of the gum after 2 minutes? 3 minutes? What do you think accounts for the change in the taste of the chewing gum? Is there digestion taking place as you chew the gum? Why or why not? Write your answers on the textbox
Introduction to Experiment 2: Protein Digestion by Pepsin In this experiment, we will look at for evidence of protein digestion using albumin, a protein, and Biuret reagent. Biuret reagent is used to test for the presence of proteins, or more specifically, peptide bonds. When long polypeptide chains are present the solution will turn violet, and when shorter polypeptide chains are present the solution will turn a lighter pink color. What is/are the end product(s) of protein digestion? ____________________________________________________________ What is the purpose of the enzyme pepsin? _______________________________________________________________________ If protein digestion has occurred, will the solution be violet or pink (choose one)? _________________ Hypotheses/Predictions (See Methods section for details): What color do you expect the solution to turn when the P tubes are mixed with Biuret solution and why? P1…
Introduction to Experiment 2: Protein Digestion by Pepsin In this experiment, we will look at for evidence of protein digestion using albumin, a protein, and Biuret reagent. Biuret reagent is used to test for the presence of proteins, or more specifically, peptide bonds. When long polypeptide chains are present the solution will turn violet, and when shorter polypeptide chains are present the solution will turn a lighter pink color. What is/are the end product(s) of protein digestion? Amino acids What is the purpose of the enzyme pepsin? It helps in the digestion of proteins by breaking down the peptide bonds between amino acids into smaller peptides If protein digestion has occurred, will the solution be violet or pink (choose one)? Hypotheses/Predictions (See Methods section for details): What color do you expect the solution to turn when the P tubes are mixed with Biuret solution and why? P1 P2 P3 P4 The least protein digestion (or none at all) will take place in tubes…
Lingual lipase is an enzyme that is secreted from glands in the oral cavity located near to the tongue (pH=~6.7). This enzyme is specialized to digest triglyceride molecules in the mouth however it is responsible for almost none of the digestion of dietary fat. Food spends only a very brief period of time in the mouth before it is swallowed. The enzyme together with the food then reaches the stomach where the pH is ~2. Considering what you know about tertiary structure, explain using specific examples why this enzyme is not able to participate in lipid digestion in the body.
pages). A 20 years old athlete (racer) asked you togive opinion on whether predominantly eating food rich with saturated fatty acids would haveany harm on him knowing that he has no health problems of any kind? Give explanation for youranswer supported by scientific evidence.
How does hydrochloric acid aid in the digestion of food? Hydrochloric acid breaks down the peptide bonds, glycosidic bonds, and acid anhydride bonds among proteins, carbohydrates, and lipids respectively. Hydrochloric acid does not really participate in the digestion of food; however, the acidic environment due to HCl activates pepsinogen which will be converted into pepsin that breaks down peptide bond between amino acids in a polypeptide. Hydrochloric acid is the gastric juice that stops lipid digestion in the stomach. Hydrochloric acid initiates carbohydrate and protein digestion in the stomach.
Digestion of foodstuff: Fill in the table below with the substrate and product of each digestive enzyme. You do not have to be specific (you can say “sugars” rather than “glucose and fructose.” ENZYME SUBSTRATE PRODUCT ORGAN OF PRODUCTION SITE OF ACTION OPTIMAL pH Salivary Amylase Starch Sugar Salivary Glands Oral Cavity Neutral Pepsin Trypsin Carboxypeptidase Nucleosidase
State the difference between vitamin C (ascorbic acid extracted from citrus fruits and synthetic vitamin C in the market. но но, Но OH State the difference between vitamin D (Cholecalciferol (D3)) synthesized in the body "natural synthesis" and vitamin D tablets in the market. H,C CHH CH3 CH2 HO
Suppose that you perform an experiment to observe the effect of temperature and pH on the enzymatic activity of salivary amylase using the Iodine test, and starch as the substrate. Complete the table below: Temperature (°C) Color of solution Rank (1 - greatest digestion and 3 - least digestion) with I2 4 37 100 pH Color of solution Rank (1 - greatest digestion and 3 -least digestion) with I2 4 7 10
1. Environmental factors influence an enzymes ability to function. Each and every enzyme works best in a particular range of conditions that reflect the environment in which it evolved. Two such enzymes are pepsin and trypsin that each play in a role in human digestion. The enzyme pepsin begins the process of protein breakdown in the stomach. During digestion, the stomach's contents pass into the small intestine, where trypsin continues the digestion process. pepsin trypsin 2 4 6 10 pH (a) Describe how an enzyme's structure is related to its function. Explain what environmental conditions could interrupt this relationship. (b) Design an experiment using hydrogen peroxide to investigate the effect of changing environmental conditions have on catalase activity. (c) Using the figure provided, predict the activity for trypsin was released in the stomach. Justify your prediction. Enzyme activity →
Home Activity: Gastric juice is a juice secreted by the stomach. It contains an enzyme called pepsin. To show the importance of pepsin in the digestion of protein. We performed an experiment on meat (protein) (document 3) and observed the results (document 4). pepsin water 37°C After 1 hour 1 2 1 2 meat Meat disappears meat is pH=2 pH=2 is still present (document 3) (document 4) Answer the following questions: 1- Pick out from the paragraph the aim of the experiment. 2- Construct a table showing the experimental conditions and the results of test tubes A and B. 3- Indicate the variable. 4- What does the result indicate in each tube? 5- Explain the results of test tubes A and B. 6- Specify the control tube. 7- Draw out a conclusion.