few hours 2. Half-fill a 250cm3 beaker with water. Heat the water until it boils. Keep the water at boiling point. 3. Use the forceps to place the leaf in the boiling water. Boil for 2 minutes. 4. Turn off the Bunsen Burner. (If you are using a heat source without a naked flame - electric water bath or hot plate - this step is uneccesary.) 5. Place the boiled leaf in a boiling tube containing 90% ethanol. 6. Place the boiling tube in hot water and boil for 10 minutes or until the
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is called photosynthesis. This process is used by plants and other organisms for synthesis of lipids and amino acids or can be metabolized during cellular respiration to produce ATP. This process takes place in chloroplasts‚ which is a plastid that contains chlorophyll and involves two interlinked reactions‚ which are light dependent reactions and light independent reactions. Throughout our lab experiment‚ we focused on the affect access of light has on carbon dioxide during photosynthesis. Carbon
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Answers to Photosynthesis Practice AP Biology 1. Draw a picture of the chloroplast and label the stroma‚ thylakoid‚ thylakoid lumen (space)‚ inner membrane‚ outer membrane. 2. Using 18O as the basis of your discussion‚ explain how we know that the oxygen released in photosynthesis comes from water. When the oxygen in water has the radioactively labeled oxygen‚ the gas released from photosynthesis also has the labeled oxygen. This shows that the oxygen gas given off during photosynthesis comes from
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quickly. One chemical that is made industrially is sodium thiosulfate. Sodium thiosulfate solution is sold in a range of concentrations. Dilute solutions of sodium thiosulfate can be used for cleaning contact lenses and used as a medicine for some cancer patients. Concentrated solutions are used to treat spillages of some chemicals. Sodium thiosulfate is safe to handle and store‚ but if it is mixed with an acid‚ a reaction happens. When dilute sodium thiosulfate is mixed with an acid‚ solid sulphur
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and mass was calculated to find the density of the regularly shaped object. In the second part of section A‚ sample of metal pellets were obtain and asked to find the density of the pallets. The metal pellets were weighed to calculate the mass. Using the graduated cylinder‚ 50mL were approximately added to the graduated cylinder. The pellets were then added into the graduated cylinder and to get the volume of the pellets by subtracting the volume of the water and the pellets by the volume of just
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Investigating the Ratio Between Poly-Vinyl Alcohol and Sodium Borate to form a Bouncing Ball Timothy English Gen. Chem. 1 Lab Section: 009 Introduction: Poly-Vinyl Alcohol (PVA) is a water-soluble synthetic polymer that will be used as one element to form the well know bouncing ball‚ along with Sodium Borate (borax)‚ which has a variety of uses because of its weak base. PVA is ideal for this experiment because it is odorless‚ nontoxic‚ has high tensile strength and flexibility. The
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developed an Oracle Siebel Solution for customer support groups‚ incorporating Computer Telephony Integration‚ Service Requests and Activity Management‚ Oracle Siebel Order Management‚ and multiple integrations with legacy order fulfillment systems using Fusion Middleware. After the implementation of Customer Care program‚ a customer satisfaction survey showed an increase in score from 66% in 2008 to 88% in 2010. View Complete Abstract | Download Infosys Oracle EBS R12 upgrade helps MoneyGram
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Photosynthesis is a chemical process that converts the sunlight into a chemical energy that plants store for later. Without photosynthesis‚ the world as we know it would not exist. All the plants would die and so would a major food and oxygen source. During Photosynthesis water is sucked up through the roots up the stem and to the leaves. The leaves take in carbon dioxide and begin to absorb sunlight. these things combine to make glucose and oxygen. The plant then uses the glucose and oxygen is
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backed with the data collected. The initial heart rate before the drug‚ hemp was applied‚ was 216 BPM. The final heart rate‚ with the drug was 132 BPM. That is a change by -84 BPM. This proves that hemp lowered the heart rate of the Daphnia‚ like the hypothesis stated. The overall average for all the groups‚ there is a similar trend with a -7% change meaning the every test had the same outcome of the heart rate decreasing. There
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experiment‚ and the constant will be the cup of water that will have no chemicals added. If one teaspoon of ammonium chloride‚ calcium chloride‚ and sodium chloride are added to separate glasses of water‚ then ammonium chloride will keep the water cold the longest because it is most commonly used in brand name cold packs. In order to test the hypothesis‚ the scientists will label four cups to keep track of what chemical will go in each cup. One will just be plain water‚ while the next will be labeled
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