The Antibiotic Decrease Yeast Cells Francine Rodriguez Biology 1401 Lab section Department of Biology, The University of Texas-Pan American March 8, 2013 Abstract: The main focus in this experiment was to find out antibiotics affect yeast cell cultures in a controlled environment. We imagined we owned a business in which a part of the business is to grow yeast (Saccharomyces cerevesiae) to be distributed as dry yeast for bakeries and breweries. Profits depend rapid, economical production a large number of yeast cells. We had observed that there is apparent difference in the yield of yeast cell when it comes in contact of an antibiotic. It appeared that that antibiotic had decreased the number of yeast cells.
We use it to make many types of sweeteners, it can produce oil, along with processed foods and animal-derived foods. Author Linda Pollak also states, “In addition, corn is eaten directly in bread and in cereal -type foods, snack foods, and foods made from masa flour. Corn gluten meal is a by - product of grain processed by wet milling. Although primarily used as animal feed, its use as human food is being investigated. Specialty - type corns eaten directly include popcorn and sweet corn.
In your experiment, is the light corn syrup in the dialysis tubing hypertonic or hypotonic to the water? hypertpnicressure B. 0.302 grams of an antibiotic was dissolved in 500 mL of water at 23.6°C. The solution has an osmotic pressure of 8.34 mm Hg. What is the molar mass of the antibiotic?
Name 4 examples of genetically modified crops. Pesticide resistant rape plants, Insecticide sweet corn, golden rice which contains large amounts of vitamin A, Long-lasting tomatoes 4. Which genetically modified foods are sold now and where are they grown? Soya Beans, Sweet Corn,
With these solutions, the students were able to test whether not the amylase continues to break down starch with the presence of the carb cutter. Amylase mimics the enzyme activity that occurs in the body upon starch. The carb-cutter acts as the diet pills. The I2KI was used to add color to the solution. It binds with starch so the more starch, the darker the solution was.
Use a new glucose strip and record Data: Conclusion: According to my data, pH levels do, in fact, affect the results of Lactex. I say this because in my experiment, pre-enzyme, my solutions were all negative except for the soda. I used the test strips to determine if they were negative or positive solutions. After I put in the enzyme, Lactex, my results changed. Vinegar, Antacid, and Soap all became positive solutions after I put in the enzyme.
Over a period of 1000 years the Native Americans transformed Maize by using selective breeding. Maize was a staple crop and food in their diets. The American Indians would also ground dry corn kernels into corn meal which would be used for cornbread, corn syrup, or corn pudding. The husks of the corn cob were braided into masks, baskets, and dolls. Christopher Columbus first discovered corn in 1492 in Cuba.
4. Also it helps the students to understand how yeast works and reacts to different chemicals. * Is important to shake the yeast suspension just before you add some to the test tube because all the yeast is in the bottom and you need to get it to the top to get them to the tube. * My graph shows that the amount of food and the activity of yeast were different because we put different amount of yeast. * The test tube should be set up in exactly the same way except for the differences amount of molasses because if not they would be a different result in the lab.
Even though popular demand for corn is dated back to the Mayan era, Pollan answers this question when he states, “A great many of the health and environmental problems created by our food system owe to our oversimplify nature’s complexities, at both the growing and eating ends of our food chain” (6). Through scientific studies we have found ways in which we can manipulate corn into becoming a byproduct or base for practically anything. This then means that when its molecules are broken down, additives are created, such as fructose corn syrup, and it is then infused into food, and drinks. This is what he means by the eating end of the spectrum. As for the growing end of the spectrum, Pollan then goes on to say that “It (corn) had to adapt itself not just to humans but to their machines” (30).
7. Other Made from some other plastic, e.g childrens crockery 5. Composting Plastics What if you could make a plastic that would biodegrade? You could use it too make things like crisp packets or biscuit wrappers, things that get damaged and are difficult to reuse. If you could make a biodegradable plastic bag, you could compost it instead of throwing it away.