Lecture 14 Lecture Gene Complementation in Bacteria In order to perform tests for dominance or for complementation in bacteria we need a way to make the bacteria diploid for part of the chromosome. To do this we need to consider a different extrachromosomal element: Ori T The F plasmid (length 105 base pairs) Tra genes There are some special terms to describe the state of F in a cell: F– refers to a strain without any form of F‚ whereas F+ refers to a strain with an F plasmid. F‚
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allowed entry of air‚ and yet excluded ________. | | oxygen | | | nutrients | | | airborne bacteria | | | broth | | | heat | Question 4 | | 1 / 1 point | Pasteurization was first developed to kill ________ in wine. | | endospore-producing bacteria | | | all bacteria | | | disease-causing bacteria | | | antibiotic-producing bacteria | | | spoilage bacteria | Question 5 | | 1 / 1 point | Robert Koch’s studies on Bacillus anthracis established a sequence
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Antony R 9:00Am-11Am Unknown Number 94 Unknown Results Streptococcus salivarius The first step in my unknown identification was to carry out a gram stain to observe the cell shape and arrangement. My unknown turned out to be gram positive bacteria cocci shaped with long chain cell arrangement. The unknown was gram positive because the cells stained blue-violet ‚this indicate that my unknown has ability to retain crystal violet-iodine after alcohol application on the cells which is a gram
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Mystery bacterium I would not say science is storybook fun‚ but who knew it become a mystery. Trying to find out what was in our number seven vial would become a battle we were willing to take on. As I began the test of deciding if our little bacteria friend was gram positive or negative‚ Jordan my science teammate‚ was putting together a smear plate. In as little as ten minutes we had discovered by the pink oval shapes we were observing‚ our microbe friend was a gram negative rod. We had narrowed
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population live 500 metres above the sea level‚ this is actually fairly high up. What we might have been thinking of are the mountainous areas of the world like the Andes‚ Nepal or the Himalayas‚ these areas are sparsely populated due to the poor soils‚ low temperatures and high rainfall. Lowlands on the other hand are much more amiable‚ the land is easily farmed and easy to build on‚ much more appropriate for settlement; there are also higher temperatures and potentially less rainfall. Netherlands
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SHAMINMENISHA How Water Rockets Work A water rocket works using the same principles as other rockets. There are three main forces in action: thrust (Fapp)‚ drag (Ffr) and weight (w=mg). The water‚ which is forced out by the difference between internal and atmospheric pressure‚ is a reaction mass that provides the thrust. All rockets have a reaction mass‚ which can vary from hot gasses that are expelled when a fuel is burnt (in the Space Shuttle’s SRB’s for example) to water in a water rocket. The
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differences between bacteria‚ viruses‚ fungi and parasites. Answer to 1.1 – The difference between bacteria‚ viruses‚ fungi and parasites are: Bacteria – Bacteria is a single celled organism‚ bacteria have evolved to be in any environment and can be found in any substance/surface and also in the human body‚ only 1% of bacteria is actually harmful. It’s bad or infectious bacteria that causes illness as they rapidly reproduce and produce a toxin that kills or mutates cells‚ bacteria is also self-sufficient
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How to deal with water pollution? Water pollution could be a dangerous ecological menace to beaches‚ groundwater‚ animal and human health. Environmental‚ human and animal factors may create an infinite array of variables that change the way in which a particular water pollution can be dealt with. According to the World Wildlife Fund (as cited in Association for Sustainable & Responsible in Asia (ASrIA)‚ 2012 )‚ “…controlling pollution is important to conserving biodiversity…”(n.p.)
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FROM BACTERIA BIO-MEDICAL APPLICATIONS AND INSTRUMENTATION J Vindhya Vasini III year‚ EIE CVR College of Engineering Ph. 9963857871 vasini26393@gmail.com Mirza Faizaan Baig III year‚ EIE CVR College of Engineering Ph. 9700484422 faizaanbaig2@gmail.com K Sandeep III year‚ EIE CVR College of Engineering Ph. 9618268386 sandeepkumeri@gmail.com Bacteria were among the first life forms to appear on Earth‚ and are present in most habitats on the planet‚ growing in soil‚ water
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What are bacteria? Bacteria are very different from viruses. First of all‚ bacteria are much larger in size. The largest virus is only as big as the very smallest bacterium (singular for bacteria). But bacteria are still microscopic and cannot be seen with the naked eye. They are so small that the sizes of bacteria are measured in micrometers (10‚000 micrometers = 1 centimeter). By comparison‚ the head of a pin is about 1000 micrometers wide. Though more complex than a virus‚ the structure of a
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