Which of the following statements about protein digestion are true?Check all that apply.► View Available Hint(s)Pepsin is active only in an acidic environment.Hydrochloric acid in the stomach denatures proteins and activates some enzymes.The tertiary and secondary structures of proteins unfold due to the action of the enzymes in the gut.Most of the hydrolysis of polypeptides takes place in the small intestine.Some proteins are broken down into amino acids by the process of chewing.The primary structure of a protein is destroyed by hydrolysis.K

Proteins are macronutrients, which act as the building blocks of the body. Proteins can also act as…

Answered: Which of the following statements about…

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter16: The Digestive System

Section: Chapter Questions

Problem 6UC

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Arrange the following statements regarding the processes of protein metabolism starting from Step 1 to Step 10. Conversion of pepsinogen to pepsin by HCI • Active transport takes place • Conversion to individual amino acids Glutamate becomes alpha-ketoglutarate Mechanical digestion to go to the small intestines • Shuffling of amino group to generate glutamate • Conversion of proteins to simpler polypeptides Removal of basic and acidic functional groups Enters the Kreb Cycle • Acidic denaturation and hydrolysis of proteins
Which of the following best describe protein digestion? . Protein digestion is a hydrolytic process regulated by pH changes in the gastro-intestinal track, and hormonal and enzyme releases at various stages of digestion. .. Protein digestion occurs during the gastric phase of digestion starting in the stomach. Protein digestion cleaves peptide bonds releasing peptides, and amino acids Protein digestion is a hydrolytic process involving proteases/ proteinases Protein digestion occurs at the active site of proteases and is effected by the catalytic triads.
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.
Arrange the following statements regarding the processes of protein metabolism starting from Step 1 to Step 10 Acidic denaturation and hydrolysis of proteins Enters the Kreb Cycle Mechanical digestion to go to the small intestines Shuffling of amino group to generate glutamate Active transport takes place Removal of basic and acidic functional groups Conversion to individual amino acids Glutamate becomes alpha-ketoglutarate Conversion of pepsinogen to pepsin by HCl Conversion of proteins to simpler polypeptides
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 Pancreatic Amylase Salivary Lipase Pancreatic Lipase Pepsin Trypsin Carboxypeptidase Nucleosidase
Provide a complete graphical representation of the digestion of carbohydrates so that the phases of digestion, the place of digestion and the enzyme involved are clear.
Select ALL of the following that pepsin, trypsin, and chymotrypsin share in common: V they all digest proteins into peptides they are all enzymes they are all located on the brush border O they are all secreted in an inactive form O they are all produced by the pancreas O they are all proteases they are all activated by HCI (hydrochloric acid) O they must all be activated
Arrange the following statements reagarding the process of protien metabolism starting from 1 to step 10. Conversion of pepsinogen to pepsin by HCl Enters the Kreb Cycle Removal of basic and acidic functional groups Conversion to individual amino acids Glutamate becomes alpha-ketoglutarate Active transport takes place Acidic denaturation and hydrolysis of proteins Mechanical digestion to go to the small intestines Conversion of proteins to simpler polypeptides Shuffling of amino group to generate glutamate
During digestion, the presence of proteases makes proteins be digested first. Given this occurrence, what is the catalytic rc of the proteases? (Reference: https://www.britannica.com/science/proteolytic-enzyme) It does not do anything directly to the digestion process of proteins It boosts the digestion process to match the digestion of all food matter It slows down the digestion process of other food matter It speeds up the digestion of proteins ingested by the organism 0000
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
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…

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