Chemotherapeutic Agents of Control: Introduction: Chemotherapeutic agents are chemical substances used to treat various forms of infectious diseases. The chemotherapeutic agent works by stopping the bacteria from reproducing. There are two different kinds of chemotherapeutic agents. The first kind is an antibiotic‚ which slow down the growth of microorganisms. The second kind of chemotherapeutic agent is synthetic drugs. Synthetic drugs are artificially made in a laboratory. Chemotherapy
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identities of unknown bacteria. Bacteria have three different shapes; cocci‚ bacilli‚ and spirilla. Since bacteria pretty much have the same reflective index as water‚ a bacteria cell must be dyed so that these shapes can be seen. Materials: Petri dish Dropper Cleansing solution Slides Bibulous paper Inoculation loop Crystal violet dye‚ Iodine Acetone Safranin Water from the sink Microscope Clothes pin Bunsen burner Methods: 1. Obtain your slide and draw two circles where your
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who desperately wish to have children. One of these advances is In Vitro Fertilization‚ also known as IVF. IVF‚ or‚ in vitro meaning‚ “in glass” fertilization is the process by which eggs and sperm are combined outside the woman’s body in a glass petri dish and then later transferred back into the uterus in hope of achieving a pregnancy. This amazing technology has been around since the late 1970’s and the first child was born through IVF in 1978. My husband and I were faced with infertility due to
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Fish are trichromatic which means they can see all three of the most important primary colors which are Red‚ Blue and Green which can make many millions of shades of colors. Guppies which are a certain type of small fish mostly Found in trinidad and Barbados where they often do something such as penny pecking which is pecking at an object floating atop of the water as if it is a food and they make the fish peck at the object more depending on its color. Guppies color perception is based on the rods
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gradient between the substance in the “sausage” and the water is the greatest and molecules move faster when the temperature is hotter. Materials: Distilled water - cold (5 degrees) - hot (60 degrees) crushed ice 30mL diluted corn syrup 2x Petri dish 30mL undiluted corn syrup String thermometer 100mL graduated cylinder hot plate Potassium permanganate glass funnels 4x 15
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Germination in plants is the process in which dormant seed begins to grow and sprout under certain growing conditions. The English pea‚ also known as the garden pea‚ is a member of the legume family and is known to grow roughly three to four inches long. Research shows that it only takes approximately 1 week for the seed to start to germinate. There are many things that can affect‚ the growth of the pea seed such as; temperature‚ moisture‚ planting depth and sunlight. The pea grows best in temperatures
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poisoning (Burton and Engelkirk‚ 2004). Early detection of the presence of Salmonella in food products is determined to protect the consumers from contaminated products that may lead to food poisoning. There is really a need to rapidly detect microbes to maintain food safety (Ramirez‚ 2000). Poultry farms are considered as the most feasible breeding area for Salmonella bacteria (Food Standards Australia New Zealand [FSANZ]‚ 2005). It was also stressed that Salmonella and Campylobacter
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Planaria Regeneration in Ideal Temperatures vs. Cold Temperatures Christina Malfas Abstract Planaria are flatworms that live in quiet freshwater bodies. They live in a narrow range of temperatures‚ from 22-24°C. They regenerate asexually‚ specifically through a process called epimorphosis‚ in which they completely regenerate one half of their bodies after splitting themselves in two. The diffusion gradient model assumes that cells in an organism “know” their orientation on that organism due
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Organisms are open systems that interact continuously with their environment. The study of the interaction between organisms and the environment; the connectedness between living systems and non-living systems on the Earth is called ecology. The term “ecology” which was coined by Ernst Haeckel comes from the Greek root words oikos logos literally meaning “the study of household”. Haeckel was referring to the interactions within the house of nature and we have used the word ecology (translated from
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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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