Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt Graduated cylinder‚ 25- mL Safety Precautions: Universal indicator is an alcohol-based solution and is flammable; do not use near an open flame. Wear chemical splash goggles‚ chemical-resistant gloves‚ and a chemical-resistant apron. Please review current Material Safety Data Sheets for addi-tional safety‚ handling‚ and disposal information. Procedure: 1. Place the two halves of a Petri dish on the projection stage of
Premium Sodium chloride Electrode Electrochemistry
temperature of the water and the volume of the water. Materials: - petri dish - test tube - 80 mL beaker - 300 mL beaker - graduated cylinder - 5 50 mL samples of distilled water - Bunsen burner - metal ring stand - thermometer - stopwatch Method 1. Measure in cm the radius of each the petri dish‚ test tube‚ graduated cylinder‚ and two beakers. Calculate the area of each. 2. Pour 50 mL of distilled water into petri dish. Repeat for test tube‚ graduated cylinder‚ 80 and 300 mL beakers
Premium
the materials that will be used in the experiment sterile. 2. Wipe the work station with Wescodyne and paper towels. It is important to keep the sterile materials such as slides in petri dish‚ Pasteur pipette in container and forceps covered as much as possible. 3. Place four to five filter papers in the petri dish and drip few drops of water on the strips‚ this will maintain moisture in the agar cushions. 4. Remove a Pasteur pipette from its container and attach a bulb to it. 5. Obtain a tube
Premium Petri dish Water Agar plate
agar Petri dish‚ the bacteria Serratia marcescens‚ Erythromycin antibiotic disk‚ Ampicillin antibiotic disk‚ Penicillin antibiotic disk‚ sterile disk of blank filter paper‚ marking pen‚ long handled cotton swab‚ forceps‚ metric ruler‚ and a 37°C incubator. For our procedure we first filled our sterile Petri dish with agar‚ just so that the bottom of it was covered‚ then waited a day for it to condense. Then after it had hardened‚ we then we turned it over and marked the back of the Petri dish
Free Bacteria Antibiotic resistance Antibiotic
fitness providing a greater chance at survival. With a measuring clasp the body mass‚ leg length‚ body lengths were determined. Room temperature was recorded at 27°C using a thermocouple connected to a thermometer. The Beetles were placed in a petri dish and left to incubate until they were calmer and familiar with their surroundings. Their running speed was then determined over a 30 second period using a stopwatch. Our aim was to investigate the question: What effect does different hind leg lengths
Premium Mass Running Beetle
each replicate a lady beetle is places in a petri dish with aphids; 3 lady beetles are placed in a dish with aphids; and insecticide was used against the aphids. Materials & Methods In order to conduct the experiment a total of twenty four petri dishes were used. Three petri dishes were used for each replicate. Five aphids were placed in each petri dish. The first petri dish of a given replicate contained one lady beetle; the second petri dish contained three lady beetles; and the third
Premium Beetle Costs
decompose. Theory: Equipment: * 4 x petri dishes * 1 x glass stirring rod * 0.1 mol/L silver nitrate in a dropper bottle * 0.1 mol/L Sodium chloride in a dropper bottle * 0.1 mol/L Sodium iodide in a dropper bottle Method: 1. Ensure you are wearing safety glasses 2. Take the petri dishes and label then 1‚ 2‚ 3‚ and 4. 3. Add 20 drops of silver nitrate solution to each petri dish. 4. Add 20 drops of sodium chloride to petri dish one and three. Mix with stirring rod
Premium Sodium chloride Ultraviolet Sunlight
middle of a petri dish containing water‚ the lower the concentration of caffeine added to the water‚ the more oxygen planaria will obtain. That increase in the oxygen level will consequently allow them to move faster from the middle to the edge of the dish‚ their favorite location.
Premium
and 6% peroxide mixture Yeast Petri dishes Graduated cylinders Glass Beakers (size varies) pH 3.5 solution pH 11.5 solution Forceps Scoopula Scale Scissors Paper towel Timer/stopwatch Procedures: Place the petri dish on top of the scale. Zero out the petri dish. Pour in yeast until the measure of the weight is .3 grams while distributing it equally on the surface of the petri dish. Pour 10 mL of glucose per 0.1 grams of yeast into the petri dish. Allow 10 minutes for incubation
Premium Enzyme Oxygen Hydrogen peroxide
a weak bacteria. Procedure Have three petri dishes prepared with blood agar‚ and three test tubes with 100 milliliters of milk. Label three test tubes‚ “A‚” “B‚” and “C.” With a toothpick‚ add a small amount of the E. coli specimen to tube “B"; shake the test tube to mix throughly. For test tube “C‚” add the same amount of E. coli and five millimeters garlic juice. Shake the test tube. Allow all test tubes to incubate for two hours. Mark the petri dishes “A‚” “B‚” and “C.” Use a syringe to
Premium Escherichia coli Agar plate Antibiotic resistance