This experiments purpose is to study the effects of manmade chemicals on daphnia. By observing 2-3 daphnia in 4 different environments I rated each Daphnia magna on a scale of 0 to 5 on how it affected their health. I averaged each of the daphnia’s heath based on their behavior and apperence. One pure water, then three other environments exposed to antifreeze, pesticides, and cigarette ash. After observing each environment for 30 minutes I discovered that cigarette ash is the most toxic to daphnia I rated their health at a 0 and antifreeze is the only chemical I tested that didn’t result in death I rated the daphnia exposed to antifreeze at a 2 due to the change in appearance and downfall of health .…
As well, I noticed that once a pill bug wandered into the colder chamber, they would tend to stay. One thing we could do to further improve the experiment is to add more pill bugs to the chamber, in order to help prove the test's reliability.…
The purpose of the lab was to observe the environmental impact on the behavior of pill bugs (Armadillidium vulgare) by using the steps of the scientific method. . We placed two pill bugs in an enclosed space and recorded the amount of time they spent in two categories of living spaces: hard rocks or soft sphagnum moss. Despite predicting that they would have a preference for a softer area, both pill bugs spent more of their time in the rocks than in the moss. This suggests that Armadillidium vulgare has a preference towards environments with hard surfaces over soft ones, possibly due to factors like light or surface area. However, certain experimental errors such as material density and poor handling may have skewed the accuracy of results.…
It took the longest because we had to prepare the solutions with different measurements of sucrose and water for each one. We released all 20 bugs into the center chamber and watched them wander around until they started to settle in one area. After the 10 minutes was up, the most pillbugs were in the solution made with a concentration of 15 g of sucrose and 35 mL of water. We discerned that the bugs showed a reaction to chemotaxis since there was no water, but they were attracted to the solutions that were made with more water. The two most popular chambers were those of 15 g of sucrose and 35 mL of water, and 20 g of sucrose with 50 mL of water.…
The purpose of this experiment is to test whether water availability to male bean beetles will affect their reproductive success. It is expected that if a male bean beetle is given access to water before mating, then he will have a greater yield of successful…
Materials. Numerous substances in the experiment were used. The most frequently used was the unknown due to the need to test its physical and chemical qualities. When a solution of the unknown was made, 1.000 g of the unknown and 1.0 mL of water was used to make it. To test for the possible ions, 1.0 mL of silver nitrate and 1.0 mL of nitric acid were used for the ion test.…
Isopods that live on land are called Armadillidium Vulgare, also known as pill bugs. Pill bugs consume dead organisms in decomposing soil which are acidic in nature. This trait makes these organisms beneficial to our environment, by getting rid of all the dead and decomposing organisms. Pesticides are commonly used to deter pests from eating crops, and could be getting rid of beneficial organisms such as pill bugs instead. An experiment was performed to determine the preference of pill bugs in choosing between an acidic environment as opposed to basic environment.…
Pill bugs always like to come out during the night because they preferred moist and dark places. Temperature is important because in order to stay alive and be able to breathe pill bugs need moisture and humid places. Therefore, pill bugs need moist to be able to live and reproduce more pill bugs. The only way that pill bugs won't be able to adapt to the environment is…
Determining the affects of natural selection on gall fly (Eurosta) larvae from different predators Ariel O’Neil Biology 1020H Abstract This lab was done with the objective of determining if directional selection causes early larvae death in the gall fly. By first examining the parasitoid wasp and birds predatory actions we can hypothesize and predict the smaller galls will be most likely to survive directional selection.…
The study of microbiology requires not only understanding the microscopic organisms, but also the understanding of lab techniques and procedures used to identify, control, and manipulate microorganisms. The identification of microorganisms is not only important in microbiology lab, but also in the medical field to identify an agent of a disease that will help treat the patient by using the correct antibiotics to kill off the host. In this unknown lab report, techniques and procedures learned in the microbiology laboratory during the semester that was performed to test ones practical understanding of microbiology. The sole purpose of the unknown lab is to demonstrate understanding of the experimental methods and lab techniques learned during…
In future study, a more commonly used pesticide could be tested on these small water invertebrates because if the pesticide we used in our experiment have the abilities to disrupt the normal activities of Daphnia, then more question can be raised about its impact on human. From our sample size, at least 30 daphnia died within half an hour after being exposed to Atrazine and 24 were immobile with their pigment changing from normal to a whiter color as they die off. Leromina et al. (2014) observed similar result s, but suggest that the effect of pesticides on aquatic invertebrates are more physical, rather than behavioral since it effected their…
Pill Bugs: An experiment Introduction Pill bugs are very small and can be found anywhere. Under rocks, in between cracks, in your science class; they are everywhere! However, it is common knowledge that pill bugs do not like to be in open spaces. There are just too many dangerous possibilities, and they don’t need to take the risks. In this experiment, we tested to see if light affected the decisions of where pill bugs like to stay.…
For our experiment, we followed instructions very precisely. Each vial had a different amount of saline so that we could see the effects on the duckweed. Our duckweed was placed under a light for quite a while. In the beginning, we checked the growth of our duckweed every day and as we got further and further in we checked less and less. Once we reached carrying capacity we stopped collecting data and performed a difficult math equation to figure out the rate of growth.…
To determine the unknown’s morphology is the first step in narrowing down possible organisms. A MacConkey and Mannitol Salt Agar tests were conducted on the organism and revealed the following. No growth on the MacConkey plate resulting in a gram positive bacteria and the Mannitol Salt Agar result showed it could be Staphylococcus or Micrococcus. (1) A gram stain test was used in determining the shape, size and arrangement of the unknown bacteria (1). The unknown organism is heat fixed onto the slide, in order for the organism to be stained.…
Introduction In this lab report I use two different techniques to identify Unknown A and Unknown B bacteria’s. These techniques are gram staining and metabolic testing. I first used Gram staining to distinguished and identify the bacteria’s. Han Christian discovered gram staining in 1882, he had biopsy a patient lung that had pneumonia.…