Exercise 8: Chemical and Physical Processes of Digestion: Activity 1: Assessing Starch Digestion by Salivary Amylase Lab Report Pre-lab Quiz Results You scored 0% by answering 0 out of 6 questions correctly. 1. The substrate for amylase is Correct answer: e. starch and carbohydrate. You have not answered this question. 2. Which of the following is true of enzymes? Correct answer: c. Their activity can be affected by temperature and pH. You have not answered this question. 3. The reagent IKI tests
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Paper Towel Lab Report AP Biology 15 September 2011 Which Towel is The Quicker-Picker Upper! To determine which of the most popular paper towel brands such as Bounty and Marcal would be the Quicker-Picker-Upper I conducted the following experiment during which I dipped 6in X 6in squares of paper towels into 100mL and measured the amount of water absorbed by the towels in 20 seconds. After averaging all 3 trials for the paper towel brands that I tested I arrived to the conclusion that the
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Name: Lillie Cyr Exercise 8: Chemical and Physical Processes of Digestion: Activity 1: Assessing Starch Digestion by Salivary Amylase Lab Report Pre-lab Quiz Results You scored 16% by answering 1 out of 6 questions correctly. 1. The substrate for amylase is Your answer : a. maltose. Correct answer: e. starch and carbohydrate. 2. Which of the following is true of enzymes? Your answer : b. They are used up in the reaction. Correct answer: c. Their activity can be affected by temperature and pH. 3.
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Carbohydrates provide us with energy so that we can carry out our daily routines. Our body then digests it into glucose so we can have energy to do that. Saliva is a form of chemical digestion that is in the mouth. Amylase is an enzyme that catalysts the breakdown of starch into sugars. Amylase is present in human saliva‚ where it begins the chemical process of digestion. Digestion prepares food for use by cells. It breaks down large complex food molecules and turns it into small‚ soluble food molecules
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temperature on enzyme activity In this experiment… Independent variable: Temperature of the amylase Dependent variable: Enzyme activity which is measured by the time for disappearance of starch Controlled variables: Volume of amylase; volume of starch solution; concentration of amylase; concentration of starch solution Prediction of results i) At low temperature‚ the rate of amylase activity is very low. ii) At optimum (=best) temperature‚ the rate of amylase activity is the highest. iii) Increase
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Bibliography: Analysis and Discussion The hypothesis was correct according to the experiment the salt and sugar did preserve the slices. In other experiments the apple slices that were sprinkled were preserved also.
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Investigating the effect of pH on amylase activity Aim The aim of the experiment is to determine the effects of different pH and the rate of reaction on fungal amylase and starch. Introduction The enzyme amylase is found in the human body‚ it catalyses the hydrolosis of internal glycosidic bonds in polysaccharides‚ the breakdown of starch into sugars. Amylase is present in human saliva‚ where it initiates the chemical process of digestion. Enzymes work best at an optimum pH of 7 which
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works. In our experiment we tested termite “handedness” – if termites prefer to turn left or right. We did this by placing a termite in an ink path with a fork in it which would cause the termite to choose between going left or right. The ink used in the experiment attracts termites insuring they will not run randomly in any direction. The data suggests that termites will prefer to turn left when given a choice even when the right path is identical to the left. Overall‚ this lab experiment lays the groundwork
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translucent light brown solution 4 10ml solution B 1ml saliva 95 The transparent blue solution remain unchanged The transparent blue solution remain unchanged Discussion : 1. In the experiment‚ the enzyme amylase was involved in saliva. 2. The enzyme act as a catalyst in the experiment and it lowers the activation energy needed and increase the rate of
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proteins‚ enzymes are made in the ribosomes by linking together amino acids from the cytoplasm. Their action is dependent upon their ability to fit with the molecule reactants; otherwise the reaction will not proceed. For example‚ study from previous experiments demonstrates that the maltose present will not turn into glucose until it enters the intestine (different catalyst). There are diverse types of enzymes that work best under certain optimum conditions including temperature‚ pH and substrate concentration
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