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Posted: April 14th, 2022
Lab 8 Identifying an Unknown Organism BIO250L”
Lab 8 Identifying an Unknown Organism BIO250L”
Student Name: Olusola Rapphael Adeoshun Access Code (located on the underside of the lid of your lab kit): M6P8RHO
Data Sheet 1. Insert your dichotomous key here.
2. Write your microorganism number here:
Microorganism 3 Gram stain
3. Fill in the following table as you complete the interactive.
Test Observations
Gram Staining It appear to have some circular stains with a
darkish-purplish color
FTM The top is a little cloudy and has a light
yellowish color
Starch Test The cross (microbes) at the center is clearly
visible and the starch has a dark purple color
This study source was downloaded by 100000831991718 from CourseHero.com on 04-11-2022 08:49:04 GMT -05:00
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
Lab 8 Identifying an Unknown Organism BIO250L” 4. 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.
The source of microorganism 3 is Bacillus Subtilis. I utilized my
dichotomous key and it tested positive for the starch test. The highly white
color emanating from the organism assisted in reaching this conclusion.
However, before reaching a final overall conclusion, another test must be
done hence, I examined the FTM tube and observed that the organism is an
OA organism based on the growths towards the oxygen at the top of the
tube. Lastly, due to the dark colored bacteria, the gram staining test was
positive. The other clue that led me to the conclusion about microbe 3 is
that these organisms appeared in pairs during the starch test, which is
similar to what I observed during the Gram stain. Furthermore, all
organisms are rod shaped and appear to form a chain during the gram
stain process.
Insert screenshots of your tests for your microorganism:
Gram Staining:
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https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
Lab 8 Identifying an Unknown Organism BIO250L” FTM:
Starch Test:
This study source was downloaded by 100000831991718 from CourseHero.com on 04-11-2022 08:49:04 GMT -05:00
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
Lab 8 Identifying an Unknown Organism BIO250L”
This study source was downloaded by 100000831991718 from CourseHero.com on 04-11-2022 08:49:04 GMT -05:00
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BIO250L Lab 8 Identifying an Unknown Organism”
Olusola Raphael Adeoshun is the student’s name. M6P8RHO is the access code (located on the underside of the lid of your lab kit).
Insert your dichotomous key here on Data Sheet 1.
2. Fill in the blanks with your microorganism number:
Microorganism Stain 3 gram
3. As you complete the interactive, fill in the following table.
Observations from the Test
Staining by Gram It appears to have some circular stains with a white background.
color: darkish-purplish
FTM The top is a little cloudy and has a light
yellowish color
Starch Test The cross (microbes) at the center is clearly
visible and the starch has a dark purple color
This study source was downloaded by 100000831991718 from CourseHero.com on 04-11-2022 08:49:04 GMT -05:00
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
https://www.coursehero.com/file/102910517/BIO250LV2Lab8-1docx/
Lab 8 Identifying an Unknown Organism BIO250L
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