Bacteria Lab Questions Based On The Scientific Name Strepto

Bacteriapre Lab Questionsbased On The Scientific Namestreptococcus Aga

Bacteria Pre-Lab Questions Based on the scientific name Streptococcus agalactiae, what morphology would you expect these cells to have? Name at least three animal structures that would be analogous to bacterial flagella. Hypothesize how over-washing of hands can affect the population of “good” bacteria that reside on human skin.

Experiment 1: Identifying an Unknown Microorganism Data Sheet

Insert your dichotomous key here.

Write your microorganism number here:

Fill in the following table as you complete the interactive.

Test Observations

What was the species of your assigned microorganism?

Describe how you used your dichotomous key to come to this conclusion. Include any relevant tests and how the results helped you draw your conclusion.

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MAR 3023 Online Individual Internet Assignment Due Date – Refer to Syllabus

Submit into Canvas Assignment Dropbox

For this assignment, you will need to search the internet for information that would help an entrepreneur and/or small business owner to understand the importance of evaluating their organization’s marketing strategy along with their customer and product portfolios. You will then create a simple, yet very effective step-by-step instruction manual in a double-sided bi-fold or tri-fold brochure format describing how these entrepreneurs and/or small business owners can implement the various business models into their organization’s strategy. You can use MS Word, Publisher, or any other software program to complete this assignment. However, your final document must be in either an MS Word or PDF file.

Your brochure must include the following 3 concepts:

– Customer Lifetime Value

– Porters 5 Forces of Competition

– Breakeven Analysis

Then, you can choose 2 additional concepts from the list below to complete your brochure:

– PESTLE Analysis

– Unique Selling Proposition

– Product Life Cycle Analysis

– SWOT Analysis

– Sustainable Competitive Advantage

– Environmental Scan

Creativity and professionalism of the assignment presentation will also be counted toward the student’s grade, so submit a creative and professionally designed brochure. Be sure to list the website links and other sources used in your report and submit in Canvas by the due date as indicated on the syllabus.

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Paper For Above instruction

The scientific name Streptococcus agalactiae refers to a gram-positive, cocci-shaped bacterium arranged in chains. Morphologically, these bacteria typically appear as spherical cells that are approximately 0.5 to 1.0 micrometers in diameter. They are facultative anaerobes, meaning they can adapt to environments with or without oxygen, and are characterized by their ability to produce heat-stable enzymes. Their morphology—being cocci arranged in chains—resembles streptococci, which are distinguished by their elongated, chain-like clusters. Such arrangements are a result of binary fission occurring in a linear fashion, which is typical for streptococcal bacteria.

In an anatomical context, the bacterial flagella can be compared to several animal structures that facilitate movement or transportation. Three such structures are: cilia lining the respiratory tract, which trap and move mucus; sperm tails (flagella), which propel sperm cells; and the whipping tail of certain marine animals like jellyfish, which aid in locomotion. This analogy helps conceptualize how bacterial flagella function as the motility apparatus, using a whip-like motion to propel the bacteria through their environment.

The over-washing of hands can significantly impact the population of beneficial bacteria on human skin, often referred to as “good” bacteria or skin microbiota. Although hand hygiene is critical for preventing disease transmission, excessive washing—especially with harsh soaps or antiseptics—can strip away the protective microbiota layer. This disruption may leave the skin more vulnerable to colonization by pathogenic bacteria and fungi, diminishing microbial diversity that acts as a barrier against harmful organisms. Research indicates that a temporary reduction in skin microbiota following over-washing can impair immune regulation at the skin surface, possibly leading to increased susceptibility to infections such as eczema or dermatitis. Conversely, maintaining a balanced approach to hand hygiene that preserves beneficial bacteria can promote healthier skin and immune responses, highlighting the importance of gentle cleansing agents and moisturizing routines.

Experiment 1: Identifying an Unknown Microorganism involves using a dichotomous key—a step-by-step identification guide—to determine the species based on observable traits. The process begins by examining the morphology, gram-staining characteristics, and growth conditions of the microorganism. For example, if the unknown bacteria are gram-positive cocci arranged in chains, this suggests streptococci. Further tests such as catalase and hemolysis assays clarify the species; Streptococcus agalactiae, for instance, shows beta-hemolysis on blood agar and is catalase-negative.

Using the dichotomous key involves following decision points based on the test results. For instance, the key might differentiate bacteria based on gram stain, arrangement, hemolytic pattern, and antibiotic susceptibility. Each step narrows down the possibilities until the final identification is reached—here, likely Streptococcus agalactiae. The images provided (image1.png and image2.png) could show morphological features or test results, which, aligned with the dichotomous key, support the identification process.

The significance of correctly identifying microorganisms extends to clinical diagnostics, food safety, and environmental monitoring. Identification techniques like microscopy, biochemical assays, and molecular methods collectively enhance accuracy and reliability—crucial for effective treatment strategies or safety assessments. In laboratory practice, systematic application of identification keys improves diagnostic speed and precision, ensuring appropriate responses to microbial threats.

Finally, the importance of understanding microbial morphology and identification extends beyond the lab, impacting healthcare practices, public health policies, and industrial microbiology sectors. Proper microbial identification guides antimicrobial therapy, informs infection control strategies, and contributes to research advancing microbial ecology and pathogenicity studies. As microbial capabilities evolve, ongoing education about morphology, identification techniques, and their applications remains essential for microbiologists and health professionals alike, aiding in the global effort to combat infectious diseases and promote public health.

References

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• Madigan, M. T., Bender, K. S., Buckley, D. H., et al. (2018). Brock Biology of Microorganisms. Pearson.
• Forbes, B. A., Sahm, D. F., & Weissfeld, A. S. (2007). Bailey & Scott’s Diagnostic Microbiology. Mosby Elsevier.
• Janda, J. M., & Abbott, S. L. (2007). 16S rRNA gene sequencing for bacterial identification in the diagnostic laboratory: Pluses, perils, and pitfalls. Journal of Clinical Microbiology, 45(9), 2761–2764.
• Clarridge, J. E. (2004). Impact of 16S rRNA gene sequence analysis for identifying bacteria on clinical microbiology and infectious diseases. Clinical Microbiology Reviews, 17(4), 840–862.
• Cheng, A. C., & Currie, B. J. (2005). Melioidosis: Epidemiology, pathology, and management. Clinical Microbiology Reviews, 18(2), 383–416.
• Pratt, L., & Nelson, A. C. (2014). The microbiome of human skin: Queering microbial biofilms. Seminars in Immunology, 26(2), 138–144.
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• Wilson, M. (2014). Microbial Identification. Springer Science & Business Media.
• De Vos, P., et al. (2010). Microbial identification and detection: Applications and protocols. Springer Science & Business Media.