Guppies Lab Report

The purpose of this lab was to make a substitutional alloy coating the penny in a gold color. The color of the penny depends on the Zinc and Sodium Hydroxide solution, and if heat was added or not. We took a copper penny and boiled it in a Zinc and Sodium Hydroxide solution. Then we took the penny out, rinsed it in water, and dried it off. Now the penny was silver. We then took the penny and waved it across a flame causing it to turn gold. Some errors that happened were getting Zinc in our water and over cooking the penny. These could be fixed by rinsing the Zinc off the penny in its solution before taking it out and not heating the penny for as long. A suggestion for improvement would be getting the flame at the lowest temperature possible.

Do you observe a selective advantage or disadvantage for the red or blue beads on the blue habitat? Why?

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

The results of the allele frequency changes in the five different trials are all in close range of one another. The trials 1 and 5 being the same at .85 and were the highest, trial 4 was the lowest at .70, and the two middle results were trial 2 at .75 and trial 3 at .80. In a population size of 1000, the difference in the green and albino alligator’s pigments will inevitably affect the fitness. The green alligator is the dominant big “A” allele, while the

The purpose of this lab is to better understand the process of natural selection and its effects on a population by conducting a stimulation. The stimulation consist of predators (students with either a spoon, fork or a knife) and prey (different types of beans). Furthermore, students will be able to determine how phenotype (bean color and utensil used by the predators) influences natural selection. Students will also demonstrate their quantitative skills by determining the predator survival and reproduction, bean survival and reproduction, and by calculating the total percent of the population. Additionally, students will be able to identify the occurrence of evolution by natural selection after the end of generation three. Moreover, students

The purpose of the lab was to see what color bead bug would survive the longest in the environment. By performing the experiment, natural selection was being tested. Natural selection is when organisms that are most suited to the environment survive and reproduce more successfully. Certain colored bead bugs would survive longer, because they blended in. The bead bugs that are a more prominent color stood out more and were eaten right away. This experiment displays how the population of bead bugs changes over the generations, due to the amount being eaten and the amount of bead bugs that were reproduced.

In the Gummy Bear Lab, the scientific method is used throughout the process. The first step of scientific method is observation, in this case I observed how a gummy bear’s density will be affected. Second step, was to state a hypothesis on how the water will affect the density of the gummy bear overnight. In addition, my hypothesis stated, “ If the gummy bear absorbs the water overnight then the density will increase.” Next step was to gather materials to prepare to perform an experiment in the laboratory. The materials used were the following: a ruler with centimeters, balance scale, graduated cylinder, gummy bear, and a small cup of water. Then by using the materials, measurements of the gummy bear were recorded such as the length, width,

Predatory selection demonstrated heavily on how the predators prefered brighter males and how females then resorted to whatever was left. From my data of mostly drab and mostly bright guppies with the simulation having 30 rivulus, 30 acara, and 30 cichlids, I could see a clear trend. For the mostly drab guppies, in a mere 7 generations or 141 weeks, showed that the predators had wiped out the brighter guppies having a split demographic of 0% of the brightest and bright guppies, 30% for drab guppies and 70% for the drabbest of guppies. In the mostly bright guppy test, it was more even but showed an obvious lean towards the drabber guppies having 20% and 17% for brightest and bright guppies, and 17% and 46% for the drab and drabbest guppies respectively. With all this data, the trend leaned towards having the bright guppies

Introduction: Though guinea pigs are used in experiments and to test products they can also be fun awesome loving pets. If you feed them proper nutrition, give them some time to play and exercise, and clean up after them, your guinea pig will be happy and healthy. Feeding: There are three main ways of feeding your guinea pig and using the one that is right for your pet can make all the difference in having a healthy life for your guinea pig.

The heart serves an important purpose within the body, pumping blood throughout the circulatory system to supply all parts of the body with vital nutrients and molecules. It pumps oxygen and nutrient rich blood to be exchanged for carbon dioxide, which is then pumped to the lungs and eliminated from the body. The movement of blood throughout the body is due to the heart’s ability to push blood along the circulatory system at a steady, unfaltering rate. This rate, known as heart rate, is regulated and can be altered at a moment’s notice by signaling within the body and heart itself. In vertebrates, the autonomic nervous system controls and regulates heart rate. The autonomic nervous system is divided into two subunits, the sympathetic nervous system and parasympathetic nervous system. The parasympathetic nerve that innervates the heart is the vagus nerve. In this laboratory experiment, the regulation of heart rate was observed by studying a certain breed of turtle, the Red-eared Slider (Trachemys scripta elegans). Both chemical and electric signaling can influence the components of the nervous

Over the past week, I was able to observe our Broiler Flock for the final time this semester. It has been nearly two weeks since I last observed our birds and over those two weeks they have undergone some significant changes. The birds have become very accustomed to us and whenever we spend time inside the houses they are very rarely frightened unless provoked. Over the semester we have tested the effects of lighting, stocking density, and bird sex on our flock and recorded the results. During the first few weeks of growth I assumed that the birds being raised in the bright pens would easily outpace the birds in the darker pens in terms of overall size and weight. Visually the size and weight between the two pens are minimal and barely noticeable.

a) The experiment aims to identify factors that relate to bobwhite nesting selection, survival, and resource selection.

The purpose of this experiment is to test how location affects whether or not the clay caterpillar models will get pecked by birds. Twenty-one clay caterpillars were made and they were made to be 5 cm ± 0.01cm long and 1 cm ± 0.01cm in diameter. Seven caterpillar models were placed in each of the three locations. The three locations are my backyard, the park, and my community garden. As a control variable, all the caterpillars were placed 300 cm ± 50 cm above the ground. An equal amount of caterpillars were glued, to prevent them falling off, in similar areas such as trees, bushes, and fences. This experiment went on for three weeks. Each week is considered one trial. Each caterpillar that was pecked or not was recorded and the data was placed

The intention of this lab is to determine and investigate the different parts and components that make up a frog’s external body, muscles, digestive system, circulatory system, respiratory system, and the reproduction. Once we have determined these components of the frog we will then compare them to the human body and see the similarities and the differences.

Evolution is a very controversial topic among scientists and religious supporters who have very different perspectives about how the Earth has evolved from what it was then to what it is now. The theory that scientists find most factually correct is that current species were descents from the original species that date to prehistoric times. Over a long period of time they had acquired new characteristics and physical traits to help them adapt in their ever changing environments. To try and experience evolutionary change themselves and to get a better understanding of natural selection; scientists studied two separate locations in Trinidad’s Aripo River systems and analyzed the guppy populations to compare and contrast both environments and to look for any differences between the guppies. The guppies in the first location were preyed upon by Cichlids which tended to eat larger guppies, while the guppies in the second location were preyed upon by Killifish that ate smaller guppies. Compared to each other, in the first location guppies had larger broods; a family of young animals that are produced at one hatching or birth, reproduced at a younger age, and are smaller at maturity than those in the second location. Guppies from location one was placed in a pool with Killifish like those from location two, over time the average size of those guppies increased. To apply the concept of natural selection and evolution to the experiment and its results, it should be referred to and