Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl‚ Urea‚ Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left beaker contained both urea and albumin‚ which membrane(s) could you choose to selectively remove the urea from the solution in the left beaker? How would you carry
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protection Each working group will require: Glass beaker (100 cm3) Conical flask (100 cm3) Spatula Glass stirring rod Filter funnel (Note 1) Filter paper (Note 2) Bunsen burner‚ tripod and gauze Heat resistant mat PROCEDURE Stage 1 a Add 20 cm3 of the 0.5 M sulfuric acid to the 100 cm3 beaker. Heat carefully on the tripod with a gentle blue flame until nearly boiling. SAFETY: Be very careful not to knock the tripod while the beaker is on it. b When the acid is hot enough (just before
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Assumptions: Both populations contain the same four colors of butterflies‚ thus the gene pool is the same. However‚ the distribution of colors within that population is different‚ thus their gene frequencies are different. Materials Blue Beads Red Beads Green Beads Yellow Beads (2) 100 mL Beakers (2) 250 mL Beakers Procedure: 1. Pour 50 blue beads and 50 red beads into a 250 ml beaker. Without looking‚ randomly take 50 beads from the 250 mL beaker and place them in a 100 mL beaker (this is beaker
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2014 The Hedwig Glass Beaker When we think of beakers we think of cool experiments we’ve done in science class in middle school to measure fluids‚ or contents‚ approximately. Sometimes we also think of beakers as cups‚ something that we drink out of or use for everyday use in the kitchen. Hundreds of years ago‚ particularly during the medieval times‚ beakers were not how we see them today. To be more specific‚ beakers‚ or Hedwig Glass beakers‚ were miraculous beakers that turned water into wine
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Beach In A Beaker Introduction: The purpose of this lab is to create a heterogeneous mixture from substances commonly found at the beach. Sand and salt water will be added to the beaker to be separated. The sand will then be separated through the means of filtration. Then the salt will be separated from the water through evaporation. Theory: If the heterogeneous mixture is separated through filtration then the salt water and sand should be separated completely.A heterogeneous mixture is a mixture
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Ladies and gentlemen‚ Welcome to our press conference for the launch of our new fiction text‚ “The story of Tracy Beaker” by Jacqueline Wilson. The book was awarded as Blue Peter People’s Choice Awards in 2002. Afterwards‚ the BBC‚ a famous TV company‚ has made a TV adaptation of the book. Perhaps you’d like to know more about what made the text a success‚ wouldn’t you? Let’s begin with the interesting content. At the Start‚ Tracy has been adopted by Julie and Ted. They stop fostering Tracy
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report OSMOSIS TROUGH A SELECTIVELY PERMEABLE MEMBRANE Introduction: Molecules have kinetic energy. This causes the molecules of the cell to move around and bump into each other. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane (a membrane that only allows certain molecules to diffuse though). Diffusion or osmosis occurs until dynamic equilibrium has been reached. This is the point where the concentrations in both areas are equal and no net
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3.7.2.1.5 Urea test PRINCIPLE Urea is hydrolyzed in the presence of urease to produce ammonia and CO2. The ammonia produced combines with 2 – oxoglutarate and NADH in the presence of GLDH to yield glutamate and NAD. Urea + H2O + 2H+ 2NH4+ + CO2 NH4+ + 2-Oxoglutarate +NADH H2O +NAD+ + Glutamate The decrease in absorbance due to the decrease of NADH concentration in unit time is proportional to the urea concentration. Ammonia
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Keeping the type of plant per experiment‚ size of beaker and emission of light constant‚ how does changing the concentration of carbon dioxide affect the rate photosynthesis in plants? Introduction: Photosynthesis is the process through which plants‚ algae‚ and some bacteria convert light energy into chemical energy from carbon dioxide and water‚ producing glucose and oxygen. This process is extremely vital as it the major source of nutrition for all living things on Earth‚ and fuel organisms’ activities
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homogeneous (alike‚ same) mixture will reveal any solid particles which were dissolved in the original mixture. Materials: iron filings sand salt water magnet hot plate filter paper 50 mL & 100 mL beaker funnel tongs Directions: 1. Combine 1 g of iron filings‚ 1 g of salt and 1 g of sand in a petri dish. 2. By using a magnet remove the iron filings. 3. Place the mixture which contains salt and sand in a 100 mL beaker. 4. Add 50 mL of water to the mixture. 5. By
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