The experiment was made to figure out how mealworms react to different temperatures and which environment the worms liked better. The data and results of this experiment revealed that most of the mealworms prefer colder environments instead of hotter ones. Four out of the six mealworms prefered the cold over heat. The cold areas are better for mealworms because the worms are nocturnal, which means these worms prefer cooler and darker areas. In the beginning of this experiment most of the mealworms wouldn't move very much and would stay put in the center of the container. The mealworms were distracted by trying to escape, and there were some small crumbs in the container that must have also distracted the worms. The conclusion of this test on
Variation in selection pressures on the goldenrod gall fly and the competitive interactions of its natural enemies
We observed Sowbugs in multiple environments to determine which environment they preferred. The observational chamber was a rectangle box split equally in half. One side of this rectangle was filled with dry sand that had been heated for five minutes by a lamp, and the other side was filled with damp soil that did not receive the lamp heat. We placed each sowbug on the middle boarder of the cool, damp soil and the hot, dry sand. We each chose one sowbug to track, and made a record of its placement each minute for five minutes total. We repeated this process three times. After each repetition, we removed the sowbugs, and replaced them with new sowbugs to observe. After this observation, we shared, and recorded our results. The sowbugs spent
In this lab project, the microbiology students were given 2 unknown bacteria in a mixed broth each broth being numbered. The goal of this project is to determine the species of bacteria in the broth. They had to separate and isolate the bacteria from the mixed broth and ran numerous tests to identify the unknown bacteria. The significance of identifying an unknown bacteria is in a clinical setting. Determining the exact bacteria in order to prescribe the right treatment for the patient. This project is significant for a microbiology students because it gives necessary skills to them for future careers relating to clinical and research work.
Planaria usually live in water, water doesn’t have any effect on them which the reason why it is used as a control group in this experiment. Planarian will be put near the edge in a two-chamber tray containing water, in the side that is not covered with a dark piece of paper. Five planaria will be tested in a 2- chamber tray. We will measure how long it takes the planaria to move from the edge of a chamber receiving light, to the dark chamber. Subsequently, start by adding the lower concentration of caffeine in the water, replacing planarian in the same position and measuring how long it takes now to go back to the dark chamber in the presence of caffeine. We will duplicate the same procedure with higher concentrations of caffeine and additionally take the average of the time all five planaria took to move from the edge of the chamber in brightness, to the dark chamber in different concentrations of
The purpose of this laboratory is to learn about cultural, morphological, and biochemical characteristics that are used in identifying bacterial isolates. Besides identifying the unknown culture, students also gain an understanding of the process of identification and the techniques and theory behind the process. Experiments such as gram stain, negative stain, endospore and other important tests in identifying unknown bacteria are performed. Various chemical tests were done and the results were carefully determined to identify the unknown bacteria. First session of lab started of by the selection of an unknown bacterium then inoculations of 2 tryptic soy gar (TSA) slants, 1 nutrient broth (TSB), 1 nutrient gelatin deep, 1 motility
An Investigation to Show the Effect of Temperature on Daphnia Plan: I will submerge some daphnia contained in a test tube in water of differing temperatures and measure their subsequent heart rates. Hypothesis I think that the heart rate of the daphnia will increase up until around 40ËšC at which point most of the daphnia's enzymes will have denatured and rate of metabolism will have stopped or decreased sufficiently to have stopped the daphnia's heart rate. Apparatus list Test tube Beaker Different temperatures of water Daphnia Pipette Stop clock Microscope Slide Safety Follow usual lab safety rules. There are no major safety considerations in this experiment as the daphnia aren't harmful and water above 40ËšC will not be used. Method To determine if temperature does have an effect on the daphnia, I intend to carry out the following experiment.
Oftentimes, people can recall at least one song they know that is undoubtedly catchy because of its repetitive nature. That song can become a nuisance, when it will not leave your mind. When a melody gets stuck in your head, sometimes it could take a whole day to forget the tune. A certain tune can be stuck in your brain for many years! In Oliver Sacks’ passage, “Brainworms, Sticky Music, and Catchy Tunes”, he talks about “earworms”, or a pathological repetition. Sacks uses patterns of development to inform the modern reader about the dark side of music.
Our lab manual states that dissecting a fish/squid gives anyone who has not experienced one "a chance to see just exactly what makes an organism tick on the inside and how they compare to human internal anatomy" (Mertz, Garrison and Baker 164). What is meant by this is, by becoming familiar with the essential organs and body parts of vertebrate organisms such as a fish or rat, along with those of invertebrates like a squid or crab, one can have an idea of what to expect with the anatomy of humans. While humans are not exactly the same as the said animals—particularly the fish or squid—one should at least be able to understand that since fishes are vertebrates, they are much closer to humans than squids, which lack any bones. By looking at the bones of any fish, such as the ribs or the spine of a mackerel, their structural similarities to the bones of humans and other mammals can be quite noticeable.
We began this experiment by obtaining four separate vials that contained the four fly genotypes that I mentioned above. We then took the vials of the respective crosses, gently tapped them on the desk to knock the flies to the bottom of the vials, took the stoppers out of the vials and put the open ends together. We had to tap the vials on the desk again to get all of the flies into one vial. We had to perform these procedures for both Cross A and B. After combining the flies into the proper vials, we labeled and turned in to our TA and allowed them to mate for a week.
This disease may be on the brink of being eradicated entirely but that doesn’t stop it from being one of the grossest things that anyone has ever seen. The parasite enters the body via unsafe drinking water. When people drink water infected with water fleas that have have been hosting the larvae of the parasite. There are no symptoms, to begin with, but about one year later, blisters on the feet or legs begin to develop and then the adult fully developed worm crawls out of the host body over a period of a few weeks. It’s said that the pain is intense and can incapacitate a person for weeks at a time. The pain can also continue for months after the infection. The parasite needs to infect a person at least once a year in order to continue. There were an estimated 3.5 million cases in 1986 but the disease has been greatly reduced over time and only 22 cases were reported in 2015. This disease will probably be the first parasitic disease to be completely eradicated in humans.
This experiment intends to investigate the homeostasis of Lumbriculus variegatus as it is affected by three different drugs. Homeostasis is the the tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. A living organisms bodies goal is to keep homeostasis so that the body can run properly. The purpose of medical science and pharmaceuticals in general is to make compounds and medications that aid in the human bodies attempt to stay at homeostasis. These worms will have these three substances: alcohol, caffeine, and nicotine applied to them in either "high" or "low" concentration. Alcohol is a depressant meaning that when it enters the body it slows down and relaxes the organism.
The purpose of this lab was to design and create a vehicle powered by a mousetrap to travel the furthest distance compared to other designs using blank. The vehicle that was created collapsed and did not achieve a certain distance. That showed the instability and blank of the vehicle.
The purpose of the lab was to show the effect of temperature on the rate of
The purpose of this lab was to study the response of the genus Daphnia to chemical stimuli and to examine human responses to different stimuli. A stimulus is an incentive; it is the cause of a physical response. Stimuli can have a physical or chemical change; an example of a physical change is a change in temperature and sound. An example of chemical change would be changes in hormone levels and pH levels. Muscular activity or glandular secretions are responses that occurs when stimulus information effects the nervous and/or hormone system. Daphnia is a genus; it is a small crustacean that lives in fresh water. The body of the daphnia is visible and its internal organs are clearly seen thus it was chosen for this exercise. The
The moths were tested (without a sugar reward) at five different light intensities ranging from mid-dusk to dim starlight, to see if they could pick the training color from eight different shades of gray...