Increase the sucrose activity. 19. Referring to the table above‚ specifically state where in the intestine sucrase is likely most active. duodenum 20. Salivary amylase‚ an enzyme in saliva that breaks down starch‚ has an optimal pH of 6.7- 7.0. Explain why salivary amylase is active in the mouth‚ but becomes inactive in the stomach. Salivary amylase is an enyme that’s active in the mouth in order to break down starch into glucose it carries it function out in the environment where the PH is 6.7- 7
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refer to Activity 1: Assessing Starch Digestion by Salivary Amylase. 1. At what pH did you see the highest activity of salivary amylase? Why? 2. How do you know that the amylase did not have any contaminating maltose? 3. What effect did boiling have on enzyme activity? Why? 4. Describe the substrate and the subunit product of amylase. The following questions refer to Activity 2: Assessing Cellulose Digestion. 5. Does amylase use cellulose as a substrate? Explain. 6. Did freezing
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this lab‚ I will learn how the complex digestive system breaks down substrates such as fats‚ proteins and carbohydrates. Activity 1: Assessing Starch Digestion by Salivary Amylase Data: Chart 1 – Salivary Amylase Digestion of Starch Tube # 1 2 3 4 Additives Amylase‚ Starch Amylase‚ Starch Amylase‚ DI Water DI Water‚ Starch pH 7.0 buffer pH 7.0 buffer pH 7.0 buffer pH 7.0 buffer Incubation Cond. Boil‚ Inc. 37 deg
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Assessing Starch Digestion by Salivary Amylase 1. List the substrate and the subunit product of amylase. _starch & maltose respectively__ 2. What effect did boiling and freezing have on enzyme activity? Why? How well did the results compare with your prediction?__Boiling caused amylase to be denatured‚ thus inactivating the enzyme. Freezing has no effect. The function of an enzyme is directly related to its environment‚ like temperature.__ 3. At what pH was the amylase most active? Describe the
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glands like salivary glands‚ gastric glands‚ pancreatic‚ intestinal glands and liver. Also‚ the four layers of the digestive system are mucosa‚ submucosa‚ muscularis and serosa. The digestive system is regulated both by the Autonomic system and the Enteric nervous system. The major functions of the Digestive system are; passage and breakdown of food‚ destruction of ingested bacteria‚ viruses and toxins‚ Absorption of nutrients‚ Elimination of
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begin in the mouth‚ where an enzyme‚ salivary amylase (α-amylase;ptyalin) starts to breaking the polysaccharides (starch) into short polysaccharides (dextrin). Dextrin is a partial degradation of starch‚ shorter chains of maltose units. Salivary amylase is inactivated by stomach acid in the stomach and to a small extent‚ it continues breaking down starch (but there’s no enzymatic activities on carbohydrates in the stomach). An intestinal enzyme‚ pancreatic amylase‚ continues the activity
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Clinical Psychology. Emotional and cognitive development. Gender-emotion stereotyping and nonverbal communication Preschooler’s peer standing and social skills in relation to nonverbal decoding ability Children’s encoding and decoding of emotion in music A review of gender differences in emotion regulation Gender Differences in Social and Emotional Functioning (including Psychopathology) Gender Differences in Social and Emotional Development Risk Factors for Depression Depression Prevention
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and hydrochloric acid was used in the second test. The enzyme involed in this test is salivary amylase which can found in saliva. Salivary Amylase‚ is called ptyalin it’s to break down starch to sugar. Things we ate is broken down in mouth by amylase. Amylase hydrolysed starch into a reducing sugar which can give beneduct test a positive result. Body temperature is the optimal temperature for the action of amylase. Enzymes are catalysts for any reactions. They provide an alternative way of lower activation
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tongue and salivary glands. Hoebler et al. (1998) stated that the food was break down into smaller pieces by using teeth‚ tongue and saliva. In the mouth‚ teeth act as a tool that mechanically reduced size of food into small pieces. However‚ the tongue manipulates food bolus by pushing it for swallowing (Hoebler et al.‚1998). The last part of the oral cavity is salivary glands. In the salivary glands‚ it secretes saliva. Furthermore‚ enzyme that contain in the saliva is salivary amylase (common form
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glands. The food is mechanically broken down. An enzyme named salivary amylase breaks starch into chunks of glucose called dextrins and maltose(disaccharide maltose). Once the food reaches the stomach‚ the acid in the stomach inactivates all salivary amylase. Carbohydrate digestion is not conducted the stomach for this reason. Before the food approaches the small intestine‚ the pancreas secretes pancreatic amylase. The pancreatic amylase digests starch into maltose. The enzymes maltase‚ sucrose‚ and
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