Testing this could be done by using a Petri dish full of agar and testing different bacteria on it to see if the bacteria obtained is gram positive or gram negative. My hypothesis is there will be a lot of bacterial growth on all of the plate. Materials and Methods -Petri dish containing nutrient agar -Cotton swabs -Sharpie A Petri plate containing nutrient agar was used in the experiment. A sharpie was used to section off four quadrants of the dish for the different bacteria. Cotton swabs
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The Relation of Antiseptics and Bacteria Growth Purpose: To explore the effectiveness of different levels of concentration of antiseptic and antibacterial products’ prevention of bacterial growth. Question: Amongst common household products‚ which antiseptic and level of concentration is more effective at inhibiting the growth of bacteria? Introduction: Antiseptics are antimicrobial substances used on living tissue to reduce the possibility of infection‚ putrefaction or sepsis. The word “anti”
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isopod in a Petri Dish. It was given a choice of 4 environments (water‚ salt‚ sugar‚ vinegar). The isopods time spent in each environment was measured. If isopods prefer to be around moist areas‚ I think my isopod will prefer being in water. Procedure The materials I used were: -1 pill bug -1 Petri Dish -Filter paper -Droppers -1% solution of salt -1% solution of sugar -1% solution of vinegar -Water The procedure I followed: 1. Cut the paper towel of filter paper to fit a Petri dish as shown
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What Objective measures could we use to test the hypothesis about the cleansing power of antibacterial soap? Rithika: We can test our hypothesis on the cleansing power of antibacterial soap by using both petri dishes and testing the amount of bacteria on our hand before and after using the soap. We will be able to calculate the amount of colonies of bacteria by using the petri dishes. Calculated the difference between both samples will help us to see whether the antibacterial soap will really help us to defeat more bacteria than the regular soap
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food coloring. Fats and proteins‚ which milk is filled with (depending on the type of milk) are sensitive to changes in the surrounding solution. Dish soap weakens the chemical bonds that hold the proteins and fat in the solution. Since the food coloring dropped in the milk is made of mostly water‚ it doesn’t have a big effect on the milk. But when dish soap is added‚ the milk fat molecules move around in all directions‚ and the soap molecules race around to join the fat molecules. During this reaction
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Methods: -First‚ fill a petri dish with water and insert 15 blackworms into the dish from the bucket containing all of the blackworms. Extract one worm into a pipette then insert into the capillary tube. Place the capillary tube under a microscope and adjust until the blood flow is seen. Pick one segment and count how many times it contracts during a minute’s time. Use the pipette and push the worm out of the capillary tube and into another petri dish for “trash”( the petri dish which contains the worms
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Sterile Filter Paper. IV. Materials: A. The materials used in this lab include a agar‚ a petri dish‚ test tubes containing the pathogenic bacteria: Straphylococcus aureus‚ Hemophilus influenzae‚ Streptococcus‚ and antimicrobial agents such as antibacterial soap‚ household bleach‚ household disinfectant‚ penicillin‚ Amoxicillin‚ Erythromycin. V. Procedure: 1. Introduce the agar into the petri dish by adding the test tubes containing pathogenic bacterial stock culture- Staphylococcus arueus
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The correct petri dish with premade agar gel was collected and the lid was removed. 2. The lid of Potassium Permanganate KMnO4 was placed aside. 3. Placing one crystal of Potassium Permanganate KMnO4- purple from the bottle and into the petri dish leaving space for it to
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off completely. After cooling‚ obtain the weight of the crucible and lid by placing it on a petri dish to be placed on an electric balance (petri dish mass must be obtained prior) without using any hands; there will not be any touching of the fingers or hands to or on the crucible and subtract the mass of the petri dish to obtain the mass of crucible. (Mass is noted at 61.805g with crucible and petri dish‚ crucibles mass: 25.253g) tin is weighed between 0.9000g and 1.0g (for this expirement‚ .98g
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series of activities that allow finding‚ courting‚ and mating‚ species exhibit mating behavior. Methods and Materials 11a- For this experiment‚ you will use: 10 pillbugs‚ bedding material‚ petri dish‚ and filter paper.
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