The aim of this exercise is to equip the student with the knowledge and skill necessary for conducting microscopic observations. It is also intended to teach the student the various sizes and shapes of several different types of bacteria.
The first day an unknown sample was assigned to each group of students. The first test applied was a gram stain to test for gram positive or gram-negative bacteria. The morphology of the two types of bacteria was viewed under the microscope and recorded. Then the sample was put on agar plates using the quadrant streak method for isolation. There were three agar plates; one was incubated at room temperature, the second at 30 degrees Celsius, and the third at 37 degrees Celsius. By placing each plate at a different temperature optimal growth temperature can be predicted for both species of bacteria.
If I were to sum up my experiences from both English 101 and 102 into a few words they would be essays, essays, and essays. Going into college, I dreaded having English courses since, I had taken English classes all my life and I was mentally drained from English. But mainly, because I thought I’d have to write extremely long papers. Subsequently, I had made up in my mind that college English would be hard period. Evidently, English wasn’t as bad as I had thought it would be. Over these two semesters of English I’ve learned and written a variety of different types of writing. A few include, controversial analysis, public arguments, rhetorical analysis, literary narratives, etc. Now, although I had probably heard of these previously before,
Purpose: The purpose of this experiment is to gain knowledge of the functions and operations of the compound light microscope and an immersion oil lens by observing prepared slides of various bacteria and blood slides. We are also learning to indentify and observe the various shapes and characteristics of bacteria, as well as, yogurt cultures (fresh and prepared) and blood samples under a microscopic view. We will also be able to distinguish between blood cultures and bacteria specimens.
A separate group classified Unknown A as an animal cell, as well as, described it as oval shaped, clear, and had more than one round structure, which they claim was a nucleus. I disagree with this observation. Animal cell come in different shapes and sizes and are not necessarily clear. Another claim is that Unknown A was an ameba cell because of its abnormal shape and its organelles. Although, my group concluded that Unknown A was a protest, the claim that it is an ameba is likely too. The reason being is because protist cells and ameba cells are very similar
Figure 3. The isolated colonies from figure 2 are viewed under the microscope at the 100x objective after gram staining. In this figure, you can see both gram-negative and gram-positive microorganisms. The gram-negative are the Rhodospirillaceae and they are pink rod-shaped bacteria. The
The purpose of the lab was to determine the ratio of air to acetylene results in complete combustion of acetylene gas. The balanced chemical equation for this experiment was C2H2(g) + O2(g) --> CO2(g)+ H2O(l). Complete combustion is the reaction of an element or compound with oxygen to produce the most common oxides and energy. Complete combustion occurs when the fuel and oxygen combine in exact proportions to completely burn the fuel, which leaves a clean test tube. Incomplete combustion is the reaction of an element or compound with oxygen to produce some oxides with less oxygen than the most common oxides. Incomplete combustion occurs when there is not enough oxygen to react
A typical Risk Management plan (RMP) has five steps – Plan, Identify, Assess, Respond, and Monitor. As we discuss the five steps in details, it would be evident that they hold good in every set up in a business – be it IT or non-IT environment.
A1.Work under the hood! With a pair of tongs, hold a strip of magnesium in a bunsen burner flame. Do not look directly at the flame. Save the ash in a small beaker for the next procedure. If magnesium is substance "A" in the general equation, what is "B"?
The purpose of this lab was to practice proper handling of the light microscope, learn the names and functions of the light microscope parts, acquire skill in using the light microscope by carefully following all directions, prepare a wet mount, and locate objects under low and high power magnification. In addition, we will learn to position objects when viewed with a microscope, adjust the diaphragm correctly to achieve proper light under low and high power, learn to locate objects at various places in the “depth of field” and use stains (iodine) as an aid.
The tooth formula is a shorthand technique that biologist use to keep track of the teeth on a particular jaw. The formula consisted of two lines, top jaw and bottom jaw, which were used to count how many incisors, canines, premolars, and molar teeth a species had. Species A, Odocoileus virginiaus (white-tailed deer), had a tooth formula of 0033/3133. On the top jaw, the deer had zero incisor and canine teeth but have three of both the premolars and molars. On the bottom jaw, the deer had three incisors, one canine, three premolars, and three molars. Species B, Canis latrans (coyote), had a tooth formula of 3142/3143. On the top jaw, the coyote had three
The two independent variables were luminant cue patches (light cue, dark cue and equiluminant cue) and location of the cue and target (valid side with cue and target on same side and invalid side with cue and target on opposite sides). The dependent variable was participants’ reaction time in millisecond.
The purpose of the experiment was to see if you can use your senses while not being able to see and also to be able to trust someone to help you. An hypothesis is can you use your other senses to help you while being blinded?
This paper explores the study of an unknown bacterial culture. The bacterium were randomly assigned in a double blinded fashion to alleviate scientific or experimental error in determining their gram stain, morphology, arrangement, and scientific classification. There were eight unknown bacterial cultures given, with the unknown bacterial culture being one of the eight bacterial cultures. A myriad of tests and experiments were performed on the unknown bacteria in order to be able to properly classify it. One of the first experiments that was performed was the gram stain. It was determined to be gram positive. The arrangement of the unknown bacteria was also noted on the gram positive slide. The slide showed grape like