The effect of Lead ions on amylase activity Aim What is the effect of Lead ions on the enzyme Amylase. And does it have an inhibitory effect‚ which causes the substrate‚ in this case starch to be blocked from the reaction process in the enzyme catalyst. Also is the effect reversible or irreversible‚ which is put on the amylase. Method Apparatus and substances required Test tube holder 2% starch solution 6 boiling tubes labelled 1 to 6 1% lead nitrate solution 6 test tubes labelled A to E‚
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AUGMENTED REALITY Shafeek MACM 1. Augmented Reality The first true mention of augmented reality is in L. Frank Baum’s novel The Master Key. Printed in 1901‚ the book mentions a “character marker” set of electronic spectacles that when view someone through them would show a letter on that person’s forehead regarding their character. “I give you the Character Marker. It consists of this pair of spectacles. While you wear them every one you meet will be marked upon the forehead with a letter
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crystals. When finished empty and wash beaker. 7.Observe what happens in each case‚ record time and details. 8. Remember before preceding with a practical all safety precautions must be taken to prevent damage and for personal safety‚ Example: Safety goggles. Results:Room TempHeated to 90ºcMediaTemp.TimeTempTimeVinegarWaterSoapy waterObservations:Heat has a great effect on rate of diffusion of potassium crystals. Heated vinegar goes to yellowish water when heated then turns to a brownie color once it
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modern things at the store. She convinced Grandpa to buy a car and start selling cars‚ and other new things‚ at the store. “They were chock full of ideas. Miss Love was planning a window display of linen dusters‚ dust veils‚ and driving caps with goggles.” (Burns‚ 259) Miss Love serves as a catalyst for change in the life of Will Tweedy because she shows him that it’s okay to do things that others wouldn’t. Will becomes friends with Miss Love and understands her better than others in the town. While
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cuts and other. Many of these can be controlled with proper work practices and personal protective equipment (safety). Propers eye and face protection for welding safety varies depending on the particular task being performed. Helmet‚ hand shield‚ goggles‚ and safety glasses or combination of these are accepted must meet the test for transmission of radiant energy prescribed for the practice for occupational and educational Eye and Face Protection. Clothing shall provide sufficient coverage and be
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however‚ does not react with sulphuric acid and so another method must be used. In this experiment a basic copper compound (copper(II) oxide) will be reacted with sulphuric acid giving copper(II) sulphate as one of the products. Method 1. Wear goggles and keep your face away from the beaker during the reaction 2. Place 20 cmm3 sulphuric acid into a 100 cm3 beaker 3. Add spatulas of copper carbonate carefully and stir the mixture (a lot) with a starring rod (not the spatula) to react all of the
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or rings. Most likely the anions will be the insoluble. From there we will be making a flow chart that will go accordingly to our experiment. Materials Test tubes or containers to mix compounds‚ Anions reagents‚ Cation reagents Safety Wear goggles ‚ Follow instructors rules at all times‚ Don’t eat anything or drink‚ no horse playing in the lab Pre Lab Questions 1. Salts of higher valence cations (2+ or higher) are insoluble‚ unless they are chlorides or nitrates. Cations of +1 charge
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supposed to bring people close to each other‚ but what they actually do is bring distance to relationships! For example see the impact of the social networks on internet upon our youth. They seem to be highly active and engaged on Facebook or Goggle+ but when it come down to facing people in real life that outgoing ‘online’ character becomes the most introvert person in the world. Or in other words modern technology has imprisoned us into this comfortable shell‚ in which we keep superficial
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Risk assessment Project: Refurbishing internal strip. Activity: Glass partitioning. Project No: 1. Completed by: David William Haule. Date: 04th/November/13. People affected: Operatives‚ site visitors and general public. Hazards Possible affects/harms Pre control risk rating Required controls Post control risk rating High Medium Low High Medium Low Adhesives
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ability to be used as a Universal Indicator. Risk Assessment: When dealing with fire‚ the Bunsen burner should always be switched to the safety flame before lighting. There will also be hot water during the experiment‚ which means that safety goggles‚ bare skin kept to a minimal incase of a splash or spill of water. Leather shoes must also be worn when dealing with acids and hot water incase of any spills Part 1: Extraction Equipment: Shredded red cabbage‚ beakers‚ tripod‚ gauze mat‚ Bunsen
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