Homework Answers
The salivary amylase plays a very important role in the process of digestion. Once the food enters into the mouth, the salivary amylase starts digesting the starch present in the food. Apart from the salivary amylase there are gastric amylase present in the stomach as well as pancreatic amylase secreted by the pancreas. But these amylase do not play a crucial role in food digestion process. The salivary amylase is a protein and it functions by forming a enzyme substrate complex and binds to the active site of starch molecule present in the food ingested. At an acidic PH the enzyme substrate complex fails to bind to the active site and the salivary amylase is denatured.
The stomach contains its own gastric juices apart from amylase and these gastric juices are highly acidic with a PH ranging between 1.5 to 1.6. The salivary amylase functions best at neutral PH between 5.2 to 7.0, it cannot function or survive in highly acidic environment. The stomach acid inactivates the salivary amylase. So when the ingested food is swallowed along with salivary amylase the gastric juices are released by the stomach wall which in turn activates the pepsinogen. These pepsinogen are later converted to pepsin. This pepsin functions best at a PH of 3.0 to 5.2 and the gastric juices secreted by stomach are required to maintain this acidic PH and restore the function of pepsin. The gastric juices secreted by stomach are highly acidic and fails to digest a protein. Therefore the salivary amylase stops working or loses its function once it reaches the stomach.
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4. Your mouth produces salivary amylase and your stomach is highly acidic. What do you think...
Explain why salivary amylase would be less active in the stomach than in the mouth.
Explain why salivary amylase would be less active in the stomach than in the mouth.
enzyme concentration decreases. Amylase is an enzyme that is produced in human salivary glands and secreted...
enzyme concentration decreases. Amylase is an enzyme that is produced in human salivary glands and secreted into the mouth to aid in starch digestion. a. What is the substrate in this reaction? b. Where on the enzyme will the substrate bind? c. Based on the fact that this enzyme is found in our bodies, what do you hypothes would be the: optimal temperature for amylase? optimal pH for amylase? d. What do you think happens to the amylase when it...
1) Based on the explanation on the interaction between starch, salivary amylase and iodine solution at...
1) Based on the explanation on the interaction between starch, salivary amylase and iodine solution at the beginning of the presentation, please give a brief explanation on the differences in colour over time for each concentration. 2) Why do you think the rate of reaction increases as the concentration of the enzyme is increased? Is the rate of reaction increasing indefinitely as the concentration increases? 3) Why do you think the reaction rate is different as the pH of the...
POSTLAB QUESTIONS Name: Masa Ahmad 1. What were the optimal pH, temperature and enzyme concentration for...
POSTLAB QUESTIONS Name: Masa Ahmad 1. What were the optimal pH, temperature and enzyme concentration for catalase? 2. Define the term denatured. Denatured is the Breaking the bonds on the molecules such as proteins 3. Which condition tested in lab denatured the catalase? 4. Why does product production slow down over time, even at optimal pH, temperature and enzyme concentration? 5. Amylase is an enzyme that is produced in human salivary glands and secreted into the mouth to aid in...
s Mailings Review View Help Tell me what you want to do viruses. Unless you need...
s Mailings Review View Help Tell me what you want to do viruses. Unless you need to edit, it's safer to stay in Protected View Enable Editing Worksheet 3-2: Digestion, Absorption, and Transport DAT For each of the nutrients listed below, indicate the mechanism of action for each of the processes identified above. Nutrient Absorption Transport Hormonal Regulation Insulin, glucagon Carbohydrates Digestion/Enzyme Activation Mouth + salivary amylase Stomach no active process Small intestine pancreatic amylase Large intestine-fiber action Primary site...
4.) The enzyme, pepsin, is one that hudrolvess proteins in the stomach, where the pH Is...
4.) The enzyme, pepsin, is one that hudrolvess proteins in the stomach, where the pH Is aboun 2 due to stomach acidx, into individual amino acids a) What would you expect to happen so the activity of the enzyme pepsin when in exits the stomach and enters the small imestine where the pi is about ? b.) Amylase is found in saliva where hydrolysis of starches begins. What would you expeet to happen to the activity of the enryme amylase...
4. Since charge is always conserved, what do you think happens to a black hole when...
4. Since charge is always conserved, what do you think happens to a black hole when it "absorbs" a charged particle. Since mass is always conserved, what do you think happens to a black hole when it “absorbs" a particle with mass. Since angular momentum is also conserved (assuming absence of outside forces) what do you think happens when a blackhole "absorbs" a spinning object.
What are wisdom teeth? Why do they often need to be removed? 3 4 15.4 Salivary Glands Serous cell...
What are wisdom teeth? Why do they often need to be removed? 3 4 15.4 Salivary Glands Serous cells produce and glycogen into disaccharides Mucous cells produce mucus for lubrication during splits starch ums Bone 6 2 Nerves and blood vessels 2 15.5 Pharynx and Esophagus Pharynx -nasal and oral cavities nasopharynx, oropharynx, Esophagus moves to the stomach, penetrates the diaphragm at the esophageal Esophageal sphincter (一 sphincter)-prevent food and chemicals from moving up out of stomach
What are wisdom...
Test your knowledge: 1. pH of our stomach is 2. Your stomach produces an enzyme called...
Test your knowledge: 1. pH of our stomach is 2. Your stomach produces an enzyme called pepsin which helps with protein digestion. In the stomach the big proteins start to get broken down and form smaller polypeptides. Complete the reaction below to show what is happening? high medium Draw a line to show what you would expect in the accompanying graph. Explain why? 2. low 2 4 pH level 59
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum...
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum via the pancreatic duct. The pancreatic juices consist of water, salts, bicarbonate ions, and digestive enzymes. Bicarbonate ion raises the pH of the acidic chyme from the stomach, stopping the active ity of pepsin and allowing the pancreatic and intestinal enzymes to function. The various pancre. atic enzymes and their substrates are listed in Table 10.2. Table 10.2 Various enzymes produced by the pancreas...
enzyme concentration decreases. Amylase is an enzyme that is produced in human salivary glands and secreted into the mouth to aid in starch digestion. a. What is the substrate in this reaction? b. Where on the enzyme will the substrate bind? c. Based on the fact that this enzyme is found in our bodies, what do you hypothes would be the: optimal temperature for amylase? optimal pH for amylase? d. What do you think happens to the amylase when it...
POSTLAB QUESTIONS Name: Masa Ahmad 1. What were the optimal pH, temperature and enzyme concentration for catalase? 2. Define the term denatured. Denatured is the Breaking the bonds on the molecules such as proteins 3. Which condition tested in lab denatured the catalase? 4. Why does product production slow down over time, even at optimal pH, temperature and enzyme concentration? 5. Amylase is an enzyme that is produced in human salivary glands and secreted into the mouth to aid in...
s Mailings Review View Help Tell me what you want to do viruses. Unless you need to edit, it's safer to stay in Protected View Enable Editing Worksheet 3-2: Digestion, Absorption, and Transport DAT For each of the nutrients listed below, indicate the mechanism of action for each of the processes identified above. Nutrient Absorption Transport Hormonal Regulation Insulin, glucagon Carbohydrates Digestion/Enzyme Activation Mouth + salivary amylase Stomach no active process Small intestine pancreatic amylase Large intestine-fiber action Primary site...
4.) The enzyme, pepsin, is one that hudrolvess proteins in the stomach, where the pH Is aboun 2 due to stomach acidx, into individual amino acids a) What would you expect to happen so the activity of the enzyme pepsin when in exits the stomach and enters the small imestine where the pi is about ? b.) Amylase is found in saliva where hydrolysis of starches begins. What would you expeet to happen to the activity of the enryme amylase...
4. Since charge is always conserved, what do you think happens to a black hole when it "absorbs" a charged particle. Since mass is always conserved, what do you think happens to a black hole when it “absorbs" a particle with mass. Since angular momentum is also conserved (assuming absence of outside forces) what do you think happens when a blackhole "absorbs" a spinning object.
What are wisdom teeth? Why do they often need to be removed? 3 4 15.4 Salivary Glands Serous cells produce and glycogen into disaccharides Mucous cells produce mucus for lubrication during splits starch ums Bone 6 2 Nerves and blood vessels 2 15.5 Pharynx and Esophagus Pharynx -nasal and oral cavities nasopharynx, oropharynx, Esophagus moves to the stomach, penetrates the diaphragm at the esophageal Esophageal sphincter (一 sphincter)-prevent food and chemicals from moving up out of stomach
What are wisdom...
Test your knowledge: 1. pH of our stomach is 2. Your stomach produces an enzyme called pepsin which helps with protein digestion. In the stomach the big proteins start to get broken down and form smaller polypeptides. Complete the reaction below to show what is happening? high medium Draw a line to show what you would expect in the accompanying graph. Explain why? 2. low 2 4 pH level 59
Each day, the pancreas produces up to 1.5 L of pancreatic juices that enter the duodenum via the pancreatic duct. The pancreatic juices consist of water, salts, bicarbonate ions, and digestive enzymes. Bicarbonate ion raises the pH of the acidic chyme from the stomach, stopping the active ity of pepsin and allowing the pancreatic and intestinal enzymes to function. The various pancre. atic enzymes and their substrates are listed in Table 10.2. Table 10.2 Various enzymes produced by the pancreas...
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