became what it is today. First of all‚ penicillin was discovered by a bacteriologist Alexander Fleming. This scientist discovered it by accident. He went away for a while and when he came back a mold was covering all his petri dishes. Fleming did some testing with a particular dish that caught his eye and it was bacteria-free. According to the text it states that‚ “ The mold was a rare spore called Penicillium notatum‚ which had wafted on air currents into his lab from another floor.” Also‚ penicillin
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seed germination rate‚ as well as a shorter radicle length. Procedure 1. Label petri dishes with the appropriate concentration levels and place filter paper in each dish. 2. Treat each dish with 2mL of the appropriate concentration of the bleach solution 3. Place 6 seeds in each dish. Make sure they do not touch the sides of the dish or each other. 4. Leave the dish in a dark place so that the roots can grow. 5. Dishes were left in the dark for four days due to the blizzard
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into a sphere shape called a blastocyst (day 1-5). These embryonic stem cells are now visible and can be developed into any of the bodies 200+ tissue cells (day 5-7). After this stage the embryonic stem cells are removed and grown in a separate Petri dish. As they continue to divide‚ they create a line of stem cells. In future scientists hope to turn these stem cells‚ perfectly matched to the patient‚ into tissues. There are many benefits that can come from therapeutic cloning. By taking healthy
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the techniques unfortunately some of the points were not successful. This could have been due to me and partner not carrying the whole experiment in a sterile environment e.g. near the Bunsen burner or it could have been to due exposing the whole petri dish when we are spreading on the bacteria on the agar plate other bacteria that was around could have caught on. Streptomycin is an antibiotic used to kill sensitive bacteria. It is an aminoglycoside which works by stopping the production of essential
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Centre Number For Examiner’s Use Candidate Number Surname Other Names Examiner’s Initials Candidate Signature Question General Certificate of Secondary Education Higher Tier January 2013 Science A BL1HP H Unit Biology B1 Biology Unit Biology B1 Wednesday 9 January 2013 9.00 am to 10.00 am Mark 1 2 3 4 5 6 7 8 TOTAL For this paper you must have: a ruler. You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point pen. Fill in the boxes at the
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http://www.unaab.edu.ng COURSE CODE: COURSE TITLE: NUMBER OF UNITS: COURSE DURATION: PCP 504 PLANT GROWTH AND DEVELOPMENT 3 UNITS 3 HOURS PER WEEK COURSE DETAILS: COURSE DETAILS: Course Coordinator: Email: Office Location: Other Lecturers: DR A.O.OLAIYA olaiyaao@unaab.edu.ng Room 131‚ COLPLANT Prof V.I.O OLOWE‚ Prof P.O.ADETILOYE‚ DR M.O.ATAYESE‚ DR O.S SAKARIYAWO COURSE CONTENT: Seed germination and dormancy. Juvenility and senescence. Translocation and respiration in crops‚ role
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Armadillium vulgare taxis response to different pH levels. Abstract The terrestrial isopod‚ Armadillium vulgare is commonly referred to as a slater or pill bug. Since transitioning from the sea to land and originally colonizing in Mediterranean regions‚ it has adapted throughout evolution to inhabit local microhabitats. The pill bug is bound by several parameters and also has specific requirements that need to be met for optimal biological functioning. As such‚ behavioural and physiological
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which were dissolved in the original mixture. Materials: iron filings sand salt water magnet hot plate filter paper 50 mL & 100 mL beaker funnel tongs Directions: 1. Combine 1 g of iron filings‚ 1 g of salt and 1 g of sand in a petri dish. 2. By using a magnet remove the iron filings. 3. Place the mixture which contains salt and sand in a 100 mL beaker. 4. Add 50 mL of water to the mixture. 5. By using filter paper and a funnel separate the sand from the mixture
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The author purpose to write this story is to explain why he wrote The Crucible‚ what pushes him to write such a story. Arthur Miller tried to make life real by showing that things get repeated in history. The McCarthy trials are similar to Salem Witch trials. People were being accused for things that they never did and do not have any proof that they did these thing. The Crucible shows that whatever is happening now happened before‚ and we are repeating the history. It is important for people to
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Microbiology Coursework: Bacillus cereus After investigation following on outbreak of food poisoning at a pizza restaurant‚ it was found that all suffers had consumed a portion of side salad from the self-service salad bar alongside their main dish. Subsequently‚ this was further traced to a rice salad. Environmental Health Officers investigating this outbreak suspected it may have been caused by Bacillus cereus (B. cereus). The presence of large numbers of B. cereus in a food is indicative
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