Questions and Answers on an Investigation: Identification of Bacteria Through The Use of a Microscope,

Questions and Answers on an Investigation: Identification of Bacteria Through The Use of a Microscope,

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1. Explain the most interesting science concepts you learned from this investigation.

The most interesting science concept we learned was that boiling one of our methods was proven the worst for us, but is the best way out of the three for purified water. This is scientifically proven because when in process of boiling the liquid changes state of matter, leaving behind the bacteria and the water evaporating leaving all unnecessary weight needed, also because most heat kills the bacteria. Ultra violet light on the other hand only kills the microbes, nothing else. The ultra violet light is not very effective because it leaves the remains of the bacteria in the water.



2. Explain the scientific techniques and skills you used to conduct your investigation.

The scientific techniques that were mainly used in the conduction of our investigation were the identification of bacteria through the use of a microscope, putting together a Simple Distillation Kit, treating Petri Dishes with Agar on them with the boiled, distilled or radiated water and calculating the coverage of bacteria on the amount of area treated on the Petri Dish. All of these scientific techniques were a crucial part of our investigation. Without all of these techniques we wouldn’t have been able to conduct such a successful experiment.

To identify the bacteria under the microscope was not easy since it was our first time identifying bacteria. After one of our trials we would pour a drop of water on to a slide, and then add Iodine Sodium over that because the Iodine helps the bacteria to show more. We would then observe the water and record our qualitative observations, which were ½ from the microscope observation and the other ½ was while watching the water...


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...million people each year, so that’s 6,000 children every day. Waterborne children are particularly vulnerable to waterborne diseases. Their small bodies take in a disproportionately large quantity of water and its contaminants, and their immune systems are not equipped to fight off bacteria such as E. Coli, Giardia and the Typhoid bacteria. More than 2 million children are killed by such diarrheal diseases each year, and 90 percent of them are kids under five. Global warming is also exacerbating this crisis as severe, prolonged droughts dry up water supplies in barren regions and heavy rains because sewage overflows. In terms of the sheer number of people affected, the lack of access to safe water and basic sanitation is a massive problem. Yet it is a problem with a variety of solutions. People who fall ill from borne diseases their bodies can’t function very well.

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