REVIEW SHEET EXERCISE 8 Chemical and Physical Processes of Digestion NAME: LAB TIME/DATE: Carbohydrate Digestion The following questions 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
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mouth is a part of the body where people use mechanical digestion and use their teeth to break down their food. With the help of saliva produced by the salivary glands‚ which produce enzymes‚ food is able to be broken down further. This is also the place where ingestion takes place” “What are enzymes” “Enzymes are very efficient catalysts for biochemical reactions. In the mouth there’s an enzyme that will help your food undergo chemical digestion” “What is it” “It is amylase. Which help digest starch
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Khadijah Lockhart Biology Lab Report November 4‚ 2013 Title: Starch Digestion by Pancreatic Amylase Statement of the Problem: What happens to enzymes when they are boiled? If digestion doesn’t occur‚ which will be present starch or maltose? If digestion does occur‚ which will be present starch or maltose? Hypothesis: I predict that when enzymes are boiled‚ they will become larger. If digestion does not occur starch will be present‚ and if it does occur maltose will be present. Materials:
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3.0 Introduction The methodology involves five main steps; the collection of hair samples‚ the distribution of questionnaires‚ the washing of samples‚ the digestion of the samples‚ and the analysis of metal contents in the hair. 3.1 Materials and reagents used during the experiment The apparatus and chemicals that were used in the previously mentioned experimental steps are summarised in table 3.0. Steps Materials Reagents Collection of hair samples 1. Stainless Steel Scissors 2. Plastic bags
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Digestion begins in the mouth when one eats food. It begins the moment one takes a sandwich bite. The teeth are used to break the sandwich that contains lettuce and pickles into smaller particles or boluses so that the enzymes can digest the food much easier. Lettuce contains carbohydrates‚ proteins and fat. The tongue helps turn food in the mouth and mix with the saliva in the mouth which contains salivary amylase enzyme. It then passes through the esophagus to the stomach which is a mixer and grinder
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Objective: To investigate how pH affects the rate of protein digestion Hypothesis: I predict that since pepsin breaks down the material the quickest at a pH of 2 in the stomach‚ test tubes #3 will reduce the greatest because it has pepsin to further break down the egg. Whereas the other test tubes will have a smaller reduction. I think test tube #2 will have the second largest reduction rate and then #6 because they all will have a greater rate at breaking down the material‚ Then‚ I predict the
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BIO 219 Group 1 Section 66 October 19‚ 2012 The extraction of purified DNA from A. fischeri by restriction digestion using Sal I enzyme and pGEM for shotgun cloning Introduction: The ultimate goal of this experiment is to isolate the lux operon‚ a targeted piece of DNA that causes bioluminescence‚ from Aliivibrio fischeri and insert it into the DNA of Escherichia coli in order to make it glow. A. fischeri is a gram-negative bacteria which participates in a symbiotic relationship with
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units of the monosaccharide glucose. Our bodies break down starch into the individual glucose units‚ which are further metabolized into CO2 and water through the process of glycolysis—this is the process we commonly call digestion. The enzyme amylase is present in our saliva and begins the process of digestion when starch containing foods enter our mouths. In this lab you will measure the amount of amylase present in your saliva by monitoring the breakdown of starch. Introduction: You can probably
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BIOS140 iLab #6: Digestion and Nutrition Worksheet Name: Complete the following questions and submit your report. This document contains 3 pages. The total lab is worth 35 points. 1. Observe the following model of the digestive system. Label all of the major organs. 2. There are many online tools that allow you to calculate your BMI. Use one of these tools to calculate your BMI. BMI Values Fill in Your Information Underweight Less than 18.5 Normal weight 18.5–24.9 Overweight 25–29.9 Obese
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Human Digestion SCI/241 Human Digestion The beginning of the digestive process starts with the smell and sight of food which activate the salivary glands. The mouth is the point at which food enters the digestive tract and continues the digestive process by chewing food. The food is then broken down into pieces and moistened by salivary glands which turn food into a bolus. The bolus goes down the pharynx into the esophagus which connects the pharynx to the stomach. The stomach is an organ
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