experiment starts with two petri dishes‚ and we filled each dish with fifty radish seeds. We made our first observations about the seeds that we see. We labeled one petri dish “Control‚” and the other was labeled “Experimental.” The experimental petri dish was put in the freezer for seven days‚ and the control petri dish was set on the counter in the normal-temp classroom for seven days as well. After those seven days‚ the experimental dish was removed from the freezer‚ and we used a graduated
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hydrated crystal (CuSO4*5H2O) * Evaporating dish * Bunsen burner * Electronic balance * Metal tongs * Ring stand Procedure: 1) Determine the mass of evaporating dish and watch glass. 2) Add between 2 and 3 grams of the hydrated crystal to the evaporating dish. 3) Determine the mass of the dish and crystal. 4) Heat the substance until it turns white. 5) Let the dish cool. 6) Determine the mass of the dish and anhydrous crystal. 7) Clean up the lab
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My favorite dish One of my favorite food is my grandma’s corn cake and prepare it means a lot to me. My grandmother still alive‚ but this recipe always remember me my childhood and the whole time I spent with her. She is the best cooker I’ve ever known and her corn cake is wonderful. Is mouthwatering to think so. The directions to prepare the cake are very simple‚ but the result is really tasty. To make it‚ it’s necessary to separate one can of yellow cornmeal and - this part is very important
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culture media and the uses for each‚ learn and employ the streak and pour dish techniques‚ and generate a pure culture of a specific organism. Set Up: For this experiment I needed: 1 Distilled water‚ 1 Paper towels‚ 1 10%-bleach or 70% alcohol solution‚ 1 Zip bag‚ 1 Pan to heat agar‚ 1 Isopropyl alcohol (rubbing alcohol)‚ 1 Cultures: S. epidermidis and L. acidophilus‚ 1 Gloves‚ Disposable‚ 1 Pencil‚ marking‚ 11 Petri dish‚ 60 mm‚ 2 Candles (flame source)‚ 1 Thermometer-in-cardboard-tube‚6 Test
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INVESTIGATING THE ECOLOGICAL NICHE OF THE CRAB USING A FAIR TEST INTRODUCTION: The ecological niche of the crab Hemigrapsus edwardsi. The crab is a member of the Crustacea phylum and is in the family Grapsidae. This crab species is found only in New Zealand on rocky shores. The rocky shore‚ where the crabs studied in this investigation were found is quite exposed. There is a large rock platform that provides small crevices and small rocks which help to protect them from wave action and predators
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reproductive spore. Reproductive Spore = a means of both reproduction and dissemination of molds‚ since they are readily carried about by air currents. Septa = hyphal cross walls which divide the filaments into separate cells. Petri Plate (dish) = a special covered dish in which mold is cultured. Medium = a solid nutrient used for culturing. Agar = a non-nutrient thickening agent which is thicker than gelatin but still quite soft. Smear = a thin film of microbial cells on a microscope slide. Fixing
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the testtube then plug it with cotton. 4) Grab the inverted plated media and flame sterilize the mouth. 5) Do a multiple streaking in the plated media with your cotton swab. 6) After streaking‚ flame sterilize again the mouth of the petri dish and then invert it. 7) Throw the cotton swab in a plastic with diluted Lysol. Results and Observation: Broth: Source: Toilet bowl (girls)
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capillary tube was dipped in mineral oil to ensure that Drosophila melanogaster fed from only one point and to control evaporation of our solutions. Petri dish samples were replicated 7 times including the control. Petri dishes were imaged immediately (Cano Scan 4400F) and Drosophila melanogaster (25) were placed in each dish. For our control‚ a petri dish containing no Drosophila melanogaster was made (Sellier et al.‚ 2010). Petri dishes were sealed and covered with tin foil. This was done to create darkness
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LAB REPORT WOODLICE Daan Rijpkema May 2009 T4Y - General Science X Words TABLE OF CONTENTS Aim..........................................................................................................................................................2 Hypothesis...............................................................................................................................................2 Materials ............................................................................
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Plant Tissue Culture 151 Chapter 9 Plant Tissue Culture Techniques Lorraine Mineo Department of Biology Lafayette College Easton‚ Pennsylvania 18042 Lorraine Buzas Mineo (B.S.‚ Muhlenberg College; M.A.‚ Duke University) is a lecturer in the Department of Biology‚ Lafayette College‚ and has taught botany since 1978 and supervised the General Biology Laboratories since 1970. Research interests in physiological and forest ecology have culminated in several publications. Other interests include
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