Osmosis Trial experiment Aim: Our aim in this experiment is to find out which vegetable absorbs the most liquid over a given time due to osmosis. Chosen Apparatus: we will need to use: six test tubes; a test tube rack; an apple; a potato; a cork borer; a measuring cylinder; sugar solution; scales to measure in milligrams; a ruler; a knife; and a pair of tweezers. Apparatus Why we chose it Advantages Alternative equipment apple Its an absorbent fruit and is similar to a potato It
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grams of salt to the second cup. This is for the 0.4% salt water solution. Step 6: Leave cups to sit. Check on them next class and record observations. Sample Initial Mass (g) Day 1 Final Mass (g) Day 2 Quantative Data Qualitative Data Tonicity Before Hypo- Iso- Hyper- 40% Salt 4.01 g 3.47 g -0.54 g Firm Firm X 0.4% Salt 4.32 g 3.65 g -0.67 g Firm Firm X Tap Water 7.5 g 6.73 g -0.77 Firm Soft X Observations: Three potatoes
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Osmosis of Sucrose Solutions of Different Molarities Through Dialysis Tubing (a Semi-Permeable Membrane) I. DESIGN A. PROBLEM/RESEARCH QUESTION 1. How does increasing molarity of sucrose affect osmosis through dialysis tubing? B. VARIABLES 1. The independent variable in this lab is the molarity of sucrose each dialysis bag is filled with. The time (30 minutes)‚ the temperature (23C) and the type of dialysis tubing used are all constants. 2. The dependent
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cells. Reactions vital to life occur under aqueous conditions in the body and cells of all organisms‚ and the concentrations of reactants necessary for these reactions depend upon the amount of water present (Pough et al. 2004). By the process of osmosis‚ water moves from areas of lower to areas higher concentration across a water- permeable membrane‚ like a cell membrane (Nybakken and Bertness 2005). In order to maintain the proper concentrations of reactants and ions within the body‚ organisms
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xxx1 xxxxxx Ms. xxxx Biology 20 November 2013 Osmosis Lab Problem: What’s the order of the concentration for each solution and how does it affect the movement of water? Hypothesis: Experimenter thinks the order of the solutions according to their concentration is D‚A‚E‚C‚B‚ from smallest. And the water will pass through semipermeable tubing bag from low to high concentration to thin the concentration inside the bag. Osmosis is a diffusion of water particles and is one of the passive transport
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Jhoselyn Adames June/12/2012 Scientific Critique of "_Osmosis Jones_" SYNOPSIS The 2001 film‚ _"Osmosis Jones"_‚ focuses on the representation of the human organism and the daily conflicts a body faces in order to maintain function. The film _"Osmosis Jones"_ is a film that tries to capture the attention of children ages eight to fourteen‚ by exposing the mechanisms of the human body. It is able to reveal the dangers of maintaining an unhealthy diet and some of the consequences that are associated
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Eggs.” Fossweb. Lawrence Hall of Science‚ 31 July 2009. Web. 6 Dec. 2009. http://lawrencehallofscience.org/foss/fossweb/teachers/materials/plantanimal/chickeneggs.html. Jong. “Biology Notes.” Memo to Biology Class. 2009. TS. Jong. “Egg Osmosis Lab.” Memo to Biology Class. 2009. MS.
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he mass and length of the potato piece must be kept the same in each experiment primarily because they affect the surface area of the piece‚ and varying surface area could have a great effect on the rate of osmosis. This is because in an experiment where the potato chip has a large surface area‚ there is a larger area of partially permeable membrane and therefore more opportunity for water particles to pass through. I will keep the surface area the same by keeping the mass and length
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Osmosis Practical Report Introduction: To determine the biological changes that occur to potato cores over a period of time in different solutions of sucrose and to relate these changes to the phenomenon of osmosis. Method: We soaked several discs of potato cuted using a cork borer with around 1 centimeter of diameter and 2 milimeters of lenght into sucrose solutions with a different range of concentrations from 0 to 1.0M. Then we weighed all the potato
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Osmosis Experiment Subject: Professor Egg-avier Duration: 3 weeks (Oct 2nd – Oct 16th) Week 1 On October 2nd my group was giving a raw egg (weighing 58.8 grams) and placed it into a clear mason jar with 200mL of vinegar. The ph levels of our vinegar equaled a 2 which tells us that vinegar is a fairly acidic liquid. Once submerged in the vinegar‚ little bubbles began to appear around the egg’s shell. We believed this to be carbon dioxide escaping from the shell. We left our egg to sit in the
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