Stress from the noises of our classroom or being moved from one environment to another or the age of the water flea could have changed the normal heart rate. Another experiment controlling these variables could bring about slightly different results. We followed a structured set of directions for experimenting with each variable. First a control experiment was preformed with only the water flea and aquarium water to establish a ‘normal’ heart rate of a water flea. My partner announced when I should begin counting the heart rate and after 15 seconds told me to ‘stop’.
After adding Iodine salts, and filtering the mixture our next goal was to test for three important chemicals that must exist in our mixture for it to be a true iodine tincture; Iodine, Iodide Ion and the triiodide ion. After several tests and comparisons of observations with their standards it was found that our tincture had all three chemicals present and therefore was ready for use. Focus Questions * How can I make a pharmaceutical product from seaweed? A pharmaceutical product can be made from seaweed by placing the sea weed in water and using heat energy to interact and break the bonds in the sea weed. Then by filtering, iodide can be extracted which when combined with other substances can make an iodine tincture, that is a pharmaceutical product.
Farm raised fish versus wild caught Cul 110 exam #3 Alexis Halstead There have been many different long standing arguments about the differences between farms raised fish and wild caught fish. There are good arguments against which is better than the other. Although these farming practices have their difference, eating fish has great health benefits and that should also be taken into consideration when deciding which product you will be purchasing. Fish are widely advertised for there health benefits, but there are many different controversies surrounding how they caught and able to be produced in mass quantities. Eating about two servings of fish per week provides healthy amounts omega-3 fatty acids that can help to lower cardiovascular disease.
We waited 5 minutes for the respirometers to equilibrate after we measured the yeast solution in the graduated cylinder. I found that giving the conclusive data by recording the amount of milliliters in the pipette left after the 5 minutes were up. We had three trials all with 2.5% , 5% , 7.5% , and 10% solution. Limitations of Experimental Design Some possible reasons for error is the percentage of sucrose we contained in each trial of the experiment. This would affect the volume of gas captured in the pipette.
Disease Yersinia pestis The Plague Jesus Urquijo Biology 113 Lab March 18, 2013 Microbes are what make the world what it is today. They are found in nearly every environment on earth. Each species has its own way of getting nutrients and adapting to its environment, such as pH, aerobic and anaerobic conditions, and enzymes that are essential for optimum living. The majority of bacteria living on earth are harmless if not beneficial to the human race, but those few microbes that are harmful to humans are those that cause disease. They are referred to as pathogens and need to be observed so we can prevent the spreading of disease caused by those particular microbes.
Although many people have a palate for this, it is probably not a good idea to consume. This is where toxic waste from the lobster's meal choices would become concentrated in its body. Additionally, there is a chance of coming across ‘the red stuff’. Also known as "roe", this constitutes a female lobster’s unfertilized eggs. Also called "coral" because of its bright red color and similar to caviar, it too, is considered a delicacy for some connoisseurs.
Topic 5: On the wild side 17. Describe how to investigate the effects of temperature on the development of organisms (eg seedling growth rate, brine shrimp hatch rates). Procedure You will need: • Brine shrimp egg cysts • 2g sea salt for each treatment • 100cm³ de-chlorinated water for each treatment • 40cm³ beakers (one for each temperature to be tested) • Water baths or incubators (one for each temperature to be investigated) • Stirring rod • Magnifying glass • Pair of forceps • Fine glass pipette • Bright light Experiment: 1. Decide on a range of temperatures from 5°C to 35°C to be tested. 2.
Program evaluation is needed so workers can remove anything from their program that was not needed, or add more attention to another direction of the program. Yuen, and Taro explain that a program evaluation “measure[s] and assess[es] the desirability and quality of the plan and its program.” (2003) Since the needs of people are always changing, it is important to have a program plan with a frequent evaluation. Evaluations can change the plans to better fit the
If so how? The Illinois Department of Public Health (IDPH) is the administrative agency that controls the regulation surrounding all issues concerned with the health and welfare of the citizens of the State of Illinois. I chose to review the requirements of the training for food handlers, their certification, and the many rules regarding overall safety of food products that are served in Illinois by the many thousands of food handlers across this state. The proposed regulation changes interest me for various reasons. The U.S Centers for Disease Control and Prevention estimate that one in six Americans suffer from foodborne illness each year, resulting in 128,000 hospitalizations and 3,000 deaths (Natalie Morris, The State Journal-Register, May 18, 2014).
6/28/2012 The 1st lab procedure performed was the gram stain. Previously, before starting the gram stain I prepared a bacterial smear on a glass slide and used the heat fixing method which was done to help the bacteria cells adhere to the glass, kill them, and also helps make the cells easier to stain by coagulating the cells proteins. The gram stain test helped me identify rather my bacterium would be a negative or positive and determined the microscopic morphology (shape, and arrangement) of my bacterium as well. The test