Repeat steps 1-5 for trial 2. Variables and Control test: Independent Variable: Amount of each reactant poured into the test tubes Dependent Variable: Height of each solution Constant variables: Amount of time waiting for solution Data Table: Test tube # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Trial 1 | 0.5 cm | 1.0 cm | 1.1 cm | 1.5 cm | 1.5 cm | 1.5 cm | 1.3 cm | 1.5 cm | Trial 2 | 0.5 cm | 0.7 cm | 1.0 cm | 1.0 cm | 1.3 cm | 1.7 cm | 1.9 cm | 1.5 cm | Observation/Analysis: Solution turns yellow when a separate product is added, solid of the solution leaks down to the bottom after 20 minutes. Conclusion: The group tried to find the excess or limiting for the reaction between KI and Pb. In the end the hypothesis was supported by the data. We found that little amounts of each product led to a greater height of solids.
The results showed that the increasing of the density leads to a decrease in the biomass of plants and that the experimental groups are not much different than the control groups. This shows that an environment can work to stabilize itself without human interruptions. Plants can ensure they don’t overpopulate an area by self-thinning and species can survive with predators using the environment they were given. Introduction Competition for resources is seen in all species and environments around the world. Since the Earth’s natural resources are limited, it necessary for species of all kingdoms to fight in order to gain enough nutrients in order to not only live but thrive and go on to produce future generations.
Shrinking the distance that food travels may help the environment in some ways but it has it’s downfalls in others. Local farmers have increased 20% in the past six years, according to the Agriculture Dept. (Source E) but this affects farmers from other parts of the world. Marion Nestle, a professor of public health at New York University states that it is not necessary to eat locally in order to be healthy. “In fact, a person making smart choices
For e.g. If 1 computer was infected by NIMDA on day 0, then on day 1, five more computers will be infected, and on day 2, the first computer and the 5 computers infected the previous day will each infect 20 computers, hence 120 more computers will be infected. On day 3, the first infected computer is repaired, and only the others will infect further
After observing nuclei, switch back to BF and set up the ocular micrometer to be adjacent to fungal tip to determine fungal growth tip. 8. Using the ocular micrometer, measure and record the distance the tip grows in 5 minute intervals. Do this with 3 different hyphal tips on one slide prep and then switch to another slide. 9.
The sample size was 100 termites and there were 5 replications for each level of treatment. The species being used was termites. The experiment was carried out by first gathering 100 termites into a glass bowl. Two equal sized circles were drawn with each writing utensil on a blank sheet of white paper. Figure 1 shows the circles that were drawn with a red ink pen and red ink sharpie marker.
We used Polymerase Chain Reaction to amplify samples of the bacterial plasmid DNA. This allowed us to determine whether the three farms have a common form of bacteria that is resistant to tetracycline. In petri dishes each member of the team used dilution of 10-2 to 10-6. With a pipette we put 100μl sample of bacteria. The dishes were placed in an incubator for 24 hours then kept in a cold room until ready for the count of bacteria.
Population Growth: Effects of Lemna under numerous light and nutrient conditions Biology 1011-002 October 27, 2011 Introduction: One of the most important factors in population growth is resources. In most cases, population growth is limited and plant populations do not grow exponentially for very long (ETSU Dept. Bio, 2008). Limiting resources for a given population may include space for growth, nutrients, sunlight, weather conditions, pollinators, or hiding places from predators (ETSU Dept. Bio, 2008).
Hypothesis: If bacteria with + pGLO plasmids that are resistant to the antibiotic ampicillin and have the gene for GFP, colonies with survive and grow on the transformation plates that have LB/ amp. In addition, + pGLO bacteria on a plate with LB/amp/ara will grow and glow green under UV light because of the inclusion of arabinose. In the control plates, -pGLO bacteria that are amp sensitive will not be able to grow on the LB/ amp plates. The other control plates with – pGLO bacteria and no ampicillin added will host a lawn of colonies. IV.
Genetically Modified Food can be accepted Nowadays, with technology’s developing, more and more Genetically Modified (GM) Foods are produced and come out in many markets around the world. However, there are a great number of people who think the GM foods are dangerous and may do harm to their health. Therefore, they can’t accept GM foods. Unfortunately, I believe that GM foods are available in our lives because they have never been proven to harm people so far, they are more nutritious than traditional foods somewhat and they also can benefit farmers a lot for their working procedures actually. Professor Ian Campbell from Australia's Peter MacCallum Cancer Center says that no scientific evidence showing that GM food is harmful to people's health has been presented to date.