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.
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- 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…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 0000Introduction 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…
- 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 polypeptidesHow 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. 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
- (a) What is protein turnover? Give 1-2 examples. (b) What are the main differences between glucogenic and ketogenic amino acids?Most diets provide adequate levels of protein, even when trying to achieve protein intakes of 1.2 to 2 grams/kilogram of bodyweight. However, protein supplementation can be utilized in some instances. Discuss instances in which you think protein supplementation would make sense or be warranted?Wasting is one of the characteristics of HIV / Aids, caused by increased metabolic activity. Untreated patients quickly lose up to 10% of their body weight, with loss of muscle mass contributing most. What happens to the amino group of amino acids that are broken down in the muscles? Fully explain the process of amino acid degradation in the muscle up to urea production in the liver.
- Describe the process of chemical digestion of our three major macronutrients, carbohydrates, proteins and fats, as one travels down the human digestive tract. Where does chemical digestion begin for each one of these? Where does chemical digestion continue for each one of these three, and where is this process completed? In your description, please include the enzymes involvedWhat is the difference between protein digestion and protein denaturation? Both occur after a meal.What characterizes the C5 amino acids? These amino acids are converted to glutamate then deaminated to alpha-ketoglutarate These amino acids have aromatic side chains These amino acids undergo transamination, methyl transfer, ring opening or carbon chain reduction to be converted to glutamate. These amino acids have 5 carbons in their side chains These amino acids contain amino groups in their side chains