aeruginosa. Pseudomonas aeruginosa is Gram negative and rod shaped that we found to be motile in the lab. Our strain of P. aeruginosa formed colonies that were round in shape and had scalloped margins on nutrient agar. On our agar slant‚ the P. aeruginosa colonies had a filiform appearance on the edges. I think we correctly identified our unknown as P. aeruginosa because we performed several different tests‚ eleven of which helped us identify our organism on the Gram negative chart that was in our lab
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First‚ the matting was placed on the four slides‚ cover-slips as well as the container of blood on top. Blood containers are in dropper bottles. Number each slide with a wax pencil. A drop of blood was placed on a slide and numbered it slide #1. Slide #1: 1. With the wooden applicator stick‚ dip the end into the blood and place a tiny drop onto slide #1 and put cover slip over it. Slide#2 1. Place 1 drop of 0.9% NaCl with the drop of blood (use the filter paper to absorb excess liquid). 2.
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Today you’re going to learn two things. Firstly‚ Agrimonia is a genus of a species of plant that usually lives for a maximum of 2 years and it has a history of medicinal uses ranging from treating weariness to ailments for various organs; some believed that if you placed stems of a particular species of Agrimony on someone’s head‚ they would fall asleep instantly and would not wake up until the plant was removed. Secondly‚ Agrimonia is a crust punk band from Sweden featuring members of At the Gates
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with previously in lab. Initially a Gram stain was conducted in order to distinguish the unknown bacterium as a Gram-positive and/or a Gram-negative organism (Lancaster and Bennett‚ 2012; Kellenberger‚ 2001). Based upon the results‚ both Gram-negative and Gram-positive bacteria were observed in the unknown mixed culture (Table 1 and Table 2; Kellenberger‚ 2001). In order to isolate the two different bacteria‚ colonies that grew on the MSA were used to inoculate Gram-positive tests‚ where as MacConkey
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As mentioned above‚ bacterial growth rates during the phase of exponential growth‚ under standard nutritional conditions (culture medium‚ temperature‚ pH‚ etc.)‚ define the bacterium’s generation time. Generation times for bacteria vary from about 12 minutes to 24 hours or more. The generation time for E. coli in the laboratory is 15-20 minutes‚ but in the intestinal tract‚ the coliform’s generation time is estimated to be 12-24 hours. For most known bacteria that can be cultured‚ generation times
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Observation The authors of this experiment‚ The Effects of some Inhibitors on the Rates of Photosynthesis and Respiration by Chlorella‚ knew that the rates of photosynthesis and respiration of many plants are affected by an adding chemicals. (Yaun and Daniels‚ 2000) The authors in this experiment would like to know in which ways different inhibitors affect photosynthesis and respiration distinctly. Objectives How certain inhibitors affect photosynthesis How certain inhibitors affect respiration
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KARYOTYPING Karyotyping refers to use of a microscope to examine the size‚ shape‚ And number of Chromosomes in a sample of body cells. Extra‚ missing‚ Or abnormal positions of chromosome pieces can cause problems with a persons growth‚ development‚ and body functions. In karyotyping‚ the chromosomes in a cell are stained with a dye to make the bands of each chromosome visible. Banding helps show differences in structure among the chromosomes and helps arrange them into pairs. The chromosomes
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Macromolecules Lab Purpose: to determine a method of testing for macromolecules. Materials: Knowns: Unknown: Test Solutions: Glucose solution Unknown solution Iodine solution Gelatin solution Benedict’s solution Starch solution Biuret solution Oil Brown paper Water Procedure: 1. Create a data table. 2. Label 5 test tubes with known solutions. 3. Add 10-20 drops of each known solution to respective test tubes‚ do not mix pipets! 4. Add 3-5 drops of
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The methylene blue staining procedure is used to measure yeast viability based on the assumption that the methylene blue will enter the cells and be broken down by living yeast cells that produce the enzymes which breaks down methylene blue‚ leaving the cells colourless. The non- viable cells do not produce this enzyme (or enzymes) and as such the methylene blue that enters the cells are undegraded causing the cells to remain coloured (the oxidized form concentrates intracellularly). The coloured
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Ever get "subject/verb agreement" as an error on a paper? This handout will help you understand this common grammar problem. Making Subjects and Verbs Agree 1. When the subject of a sentence is composed of two or more nouns or pronouns connected by and‚ use a plural verb. She and her friends are at the fair. 2. When two or more singular nouns or pronouns are connected by or or nor‚ use a singular verb. The book or the pen is in the drawer. 3. When a compound subject contains both a singular
Free Noun Verb Grammatical person