Enzymes Lecture outlines •Catalysis profile •Activation energy & its •Enzyme & substrate substrates •How enzymes bind to •Lock & Key model •Induced-fit model •Enzyme assay Lecture outcomes • At the end of this lecture‚ students are able to: • Define the catalyst • Understand how enzymes work as catalysts‚ the concept of activation energy and enzymes-substrate binding • Explain different theories of the relation between enzymes and substrates Catalysis • It is probably
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Enzymes control the rate of metabolic reactions‚ they act as biological catalysts‚ which means they are used but not used up and they also control the speed of the reaction. Enzymes are proteins which means that anything that disrupts this structure such as high temperature or change in pH will affect the enzyme activity. There are many factors affecting enzyme action for example temperature effects them‚ if the Increasing the heat gives molecules more kinetic energy so they vibrate this can then
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Questions for 454 Lab 4 View the video for Lab 4 - then answer the following questions based on the information presented in the video. (3 points) 1. List 3 forms evidence is typically discovered in network forensics The 3 forms of evidences are 1)logs maintained by firewalls‚ intrusion detections systems‚ servers‚ 2)headers of network traffic like e-mail‚ and 3) active network monitoring – packet sniffers. (1 point) 2. What are the 3 components of the 3-way handshake? (must get
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Title: Enzyme Activity Aim: To investigate the activity of the enzyme catalase in liver and potatoes‚ and to investigate the effect of temperature‚ surface area‚ pH and certain chemicals on the activity of catalase. Equipment: Dilute hydrochloric acid solution x 1ml 10 volume hydrogen peroxide x 100ml Copper sulphate solution x 1ml Aluminum nitrate solution x 1ml Zinc nitrate solution x 1ml dilute NaOH solution x 1ml Mortar and pestle x 1 25ml Beaker x 1 Hot plate x1
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BIOLOGY 2020 LAB LAB 4 – Sensory Systems I. Vision 1. Know the types of photoreceptors in the retina. (Remember there are 3 different types of cones) 3 cones i. Blue- short ii. Green- Medium iii. Yellow-Red- Long 2. Why would near point accommodation change as you get older? (Think about what happens to the lens and the muscles of the eye with age) As you get older‚ the lens becomes hardened. The elasticity of the lens decreases dramatically with age‚ resulting in difficulty
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------------------------------------------------- Enzyme Pre-Lab Harry Kang 9/26/12 1) The purpose of this lab was to determine the rate of enzyme activity under variety of different conditions‚ such as‚ different amount of drops of enzymes and different temperature of water. The class measured the pressure in the test tube during the reaction of the substance with‚ 1.5 ml of H2O2‚ 1.5ml of H2O and different amounts of enzyme drops‚ to determine how much oxygen gas is produced during the reaction
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Gabi Mejia Chem 101 Section ADF Lab 4: Weak Acid Unknown Procedure: When testing the acid‚ use only between 0.2 g and 0.3 g for each trial (get as precise a measurement as you can). The general procedure is to weigh out your acid‚ dissolve it in water‚ add a couple drops of the indicator (phenolphthalein)‚ and then add the sodium hydroxide until you note a color change (from clear to pink). When the color change occurs‚ you have added enough base to completely react with the acid (the endpoint).
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The purpose of Lab 4 was to experiment with the vi editor commands. In the lab‚ the “garden” file was edited in many different ways. Many commands were explored in this lab including the ab‚ U‚ yy‚ dd‚ w‚ set number‚ set showmode‚ and paging commands. Step 1: Boot up the computer by pressing the power button. Step 2: Select Oracle Virtualbox using the mouse. Step 3:Open Fedora by using the Virtualbox Machine and click start when Fedora is selected. Step 4: With the vi editor in command mode
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Charles Jacquier Lab 4 – Energy Sources and Alternative Energy SCI 207 Professor Selhorst Experiment 1: The Effects of Coal Mining Table 1: pH of Water Samples Water Sample Initial pH Final pH (24-48 hours) Pyrite 5 5 Activated Carbon 5 7 Water 5 5 POST LAB QUESTIONS 1. Develop hypotheses predicting the effect of pyrite and coal on the acidity of water? a. Pyrite hypothesis = If pyrite is added to water‚ it will make the water more acidic. b. Coal hypothesis = If the
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Lab 4: Le Chatelier’s Principle Name: Cammey Mahowald Lab Partners: None Date of Experiment: March 16‚ 2015 Course: CHE 112 Abstract: The purpose of this experiment is to understand the components of a reaction at chemical equilibrium and use Le Chatelier’s principle to predict the direction an equilibrium position will shift upon changes in the concentration‚ temperature‚ and pressure. It was determined that in the equilibrium of chromate and dichromate it is an exothermic reaction and in the
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