nurseries overnight to adjust to the new environment. The isopods were carefully monitored and fed daily with raw potatoes‚ apples‚ or fish flakes. In performing the experiment‚ six isopods were collected either with a spoon or scoopula and placed in a petri dish prior for the experiment. After collection‚ the
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Throughout this lab‚ diffusion and osmosis has been seen and tested through experiment. In part A of the lab‚ diffusion was demonstrated with two solids and an agar gel petri dish. One crystal of potassium permanganate and one crystal of methylene blue were placed on either side of an agar gel petri dish. The purpose of this experiment was to determine which of the crystals would diffuse across the gel more. So the question is‚ which solid would have a higher rate of diffusion through the agar‚ methylene
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because it required a greater force to move 2 marble than one marble. The 3rd law showed because if 2 marbles hit the line‚ 2 came off. This is an example of "every action has an equal and opposite reaction. The beads slid from side to Side in the dish. They wanted To stay in one place‚ so they Resisted
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CHEMISTRY I Experiment 12: Avogadro’s number (hand out) Introduction: The objective of this experiment is to determine the value of Avogadro’s number and the mole concept via the use of the monolayer experiment. Experimental data sheet: Attached Calculations: 1. Area of monolayer A= 3.14(8.58 cm)² / 4 A= 231 cm² / 4 A = 57.8 cm² 2. Molecules of stearic acid in monolayer 57.8 cm² x 1molecule = 2.8 x 1016 molecules 2.1 x 10-15 cm²
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Detection of Biological Molecules Introduction: Without carbon‚ nitrogen‚ hydrogen‚ sulfur‚ oxygen and phosphorus‚ life wouldn’t exist. These are the most abundant elements in living organisms. These elements are held together by covalent bonds‚ ionic bonds‚ hydrogen bonds‚ and disulfide bonds. Covalent bonds are especially strong‚ thus‚ are present in monomers‚ the building blocks of life. These monomers combine to make polymers‚ which is a long chain of monomers strung together. Biological
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The Effectiveness of Common Acne Products against P. acnes Bacteria Kathryn Henshaw Taunton High School Honors Chemistry I Mr. Osowick January 23‚ 2013 Table of Contents Abstract3 Background Research4-9 What is Acne Vulgaris? 4 How does Acne Vulgaris Form?6 How is Acne Vulgaris Treated?8 Purpose10 Hypothesis10 Materials10 Procedure11-14 Data15-16 Results17 Conclusion18-19 Figures20-22 References23-24 Abstract Acne is one of the most common pests to human beings. Although
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solution was added and this was given a further 90 seconds) - Apparatus Materials: - Gloves - Safety goggles - Buffer solution pH 7 - Distilled water - Solution of H2O2 - 0M‚ 0.2M‚ 0.4M‚ 0.6M‚ 0.8M‚ 1M solutions of FeSO4 - Scalpel - Forceps - Petri dish - Balance (±0.01 g) - Stopwatch (±0.01 seconds) - Pipettes - Boiling tube - Two 10 cm3 measuring cylinders (±0.05 cm3) - Delivery tube with cork - Beakers - Thermometer - 100 cm3 gas syringe (±0.50 cm3) - Clamp and stand Procedure: 1. Gather all
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Potassium Dichromate‚ and Methylene Blue.1 Arantxa Alex Carpio Group 1 Sec. X – 4L March 24‚ 2015 ABSTRACT The effect of molecular weight and time on the rate of diffusion was determined using the agar-water gel test. A petri dish of agar-water gel with three wells was prepared and a prepared solution of each substance was dropped on each well; one with potassium permanganate (KMnO4)‚ the other with potassium dichromate (K2Cr2O7)‚ and the last one with methylene blue. The
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The Effects of a Seed Coat in Seed Germination Mario Monroe INT1 Task 3 The Effects of a Seed Coat in Seed Germination Abstract Seed germination is an important aspect in plants growth and food production. It is therefore it’s of uttermost importance to know the effective ways of seed germination so as to improve food production. This research was therefore prompted by the rising issue of farmers buying low quality and a damaged maize seed from unscrupulous sellers and this has led to deterioration
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Obtain your Petri dish and observe the bacterial growth on the plate. 2. If you have clear areas where bacteria did not grow around your antibiotic discs‚ these are called ’zones of inhibition.’ Turn the plate so that you can place a ruler against the back of the Petri dish and measure the diameter of the zone of inhibition in millimeters. Record your own data in Table 1 below. 3
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