Microbe Mission B/C

Test your knowledge of various Science Olympiad events.
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Nano1llus10n
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Re: Microbe Mission B/C

Postby Nano1llus10n » March 17th, 2018, 2:25 pm

emilyshangg wrote:Hey, first time posting on this,

Here's one...

1. What antibiotics do bacteria in the genus Streptomyces secrete?
2. Describe alpha/beta/gamma hemolysis on a blood agar plate?

Again, not sure how this works, so don't kill me if I did this wrong lol


Answer
1. Streptomycins?
2. alpha: partial damage to RBCs; greenish
beta: complete breakdown of RBCs; complete clearing of RBCs around the colony
gamma: no hemolysis of RBCs; brownish
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


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emilyshangg
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Re: Microbe Mission B/C

Postby emilyshangg » March 18th, 2018, 12:17 pm

Nano1llus10n wrote:
emilyshangg wrote:Hey, first time posting on this,

Here's one...

1. What antibiotics do bacteria in the genus Streptomyces secrete?
2. Describe alpha/beta/gamma hemolysis on a blood agar plate?

Again, not sure how this works, so don't kill me if I did this wrong lol


Answer
1. Streptomycins?
2. alpha: partial damage to RBCs; greenish
beta: complete breakdown of RBCs; complete clearing of RBCs around the colony
gamma: no hemolysis of RBCs; brownish

Correct!
the first one is completely correct, but also tetracycline, and chloramphenicol are answers
gj on the second one!

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Re: Microbe Mission B/C

Postby Nano1llus10n » March 18th, 2018, 7:31 pm

1. Name the 4 types of Ebola viruses that affect humans (named after the location of an outbreak)
2. Which disease can be prevented by the vaccine under the trade name Varivax?
3. Which type of Hepatitis is the most common chronic bloodborne infection in the US?
4. Which type of Hepatitis is a subviral satellite that can only propagate in the presence of another type of Hepatitis?
5. Which disease is also called epidemic parotitis?
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


Seven Lakes High School '21

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Re: Microbe Mission B/C

Postby The48thYoshi » March 19th, 2018, 11:31 am

Nano1llus10n wrote:1. Name the 4 types of Ebola viruses that affect humans (named after the location of an outbreak)
2. Which disease can be prevented by the vaccine under the trade name Varivax?
3. Which type of Hepatitis is the most common chronic bloodborne infection in the US?
4. Which type of Hepatitis is a subviral satellite that can only propagate in the presence of another type of Hepatitis?
5. Which disease is also called epidemic parotitis?


Answers
1. Ebola Virus, Sudan Virus, Tai Forest Virus, Bundibugyo Virus
2. Chicken Pox/ Shingles
3. Hepatitis C
4. Hepatitis D
5. Mumps
aeshs ‘22

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Re: Microbe Mission B/C

Postby Nano1llus10n » March 20th, 2018, 5:34 am

The48thYoshi wrote:
Nano1llus10n wrote:1. Name the 4 types of Ebola viruses that affect humans (named after the location of an outbreak)
2. Which disease can be prevented by the vaccine under the trade name Varivax?
3. Which type of Hepatitis is the most common chronic bloodborne infection in the US?
4. Which type of Hepatitis is a subviral satellite that can only propagate in the presence of another type of Hepatitis?
5. Which disease is also called epidemic parotitis?


Answers
1. Ebola Virus, Sudan Virus, Tai Forest Virus, Bundibugyo Virus
2. Chicken Pox/ Shingles
3. Hepatitis C
4. Hepatitis D
5. Mumps


All right! Your turn
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


Seven Lakes High School '21

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Re: Microbe Mission B/C

Postby The48thYoshi » March 20th, 2018, 5:47 am

This might be a little too specific :?
Scenario: A 28 year old man returning from a visit to the Middle East is complaining of abdominal pain, loss of appetite, fever, and intestinal blockage. Further testing reveals a palpable mass near the right Iliac fossa. It was suspected that the man had acute appendicitis and as a result, was opened up for an appendectomy. Following the incision, an unusual view lay before the doctors. A resection exam was then performed, revealing epithelioid granulomas along with necrosis as well as langerhans giant cells. The surgeons involved were immediately put into quarantine, along with the patient himself.
1. What disease did the man have?
2. What is the agent that causes the disease (domain and specific scientific name)
3. What medications should be prescribed?
4. What are some common side effects of these medications?
5. What are risk factors for this disease?
6. What risk factors are present in this specific case?
7. What signs and symptoms present helped the doctors diagnose the disease?
aeshs ‘22

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Re: Microbe Mission B/C

Postby Tailsfan101 » March 30th, 2018, 7:12 am

Nobody seems to be answering The48thYoshi's questions, so I'll start this up again.

Identify the following microscopes based on images taken with them.
1
Image

2
Image

3
Image

4
Image

5
Image

Bonus: What bacterial shape appears to be shown in 3?
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

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Nano1llus10n
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Re: Microbe Mission B/C

Postby Nano1llus10n » April 1st, 2018, 11:18 am

The48thYoshi wrote:This might be a little too specific :?
Scenario: A 28 year old man returning from a visit to the Middle East is complaining of abdominal pain, loss of appetite, fever, and intestinal blockage. Further testing reveals a palpable mass near the right Iliac fossa. It was suspected that the man had acute appendicitis and as a result, was opened up for an appendectomy. Following the incision, an unusual view lay before the doctors. A resection exam was then performed, revealing epithelioid granulomas along with necrosis as well as langerhans giant cells. The surgeons involved were immediately put into quarantine, along with the patient himself.
1. What disease did the man have?
2. What is the agent that causes the disease (domain and specific scientific name)
3. What medications should be prescribed?
4. What are some common side effects of these medications?
5. What are risk factors for this disease?
6. What risk factors are present in this specific case?
7. What signs and symptoms present helped the doctors diagnose the disease?


Maybe?
1. Tuberculosis
2. Bacteria; Mycobacterium tuberculosis
3. tetracycline
4. dizziness, vomiting, diarrhea, sore throat
5. traveling to endemic areas
6. traveling to Middle East
7. not appendicitis but still has a palpable mass near the right iliac fossa, epitheliod granulomas w/ necrosis & Langerhans giant cells.
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


Seven Lakes High School '21

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Nano1llus10n
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Re: Microbe Mission B/C

Postby Nano1llus10n » April 1st, 2018, 11:26 am

Tailsfan101 wrote:Nobody seems to be answering The48thYoshi's questions, so I'll start this up again.

Identify the following microscopes based on images taken with them.
1
Image

2
Image

3
Image

4
Image

5
Image

Bonus: What bacterial shape appears to be shown in 3?


Answer
1. Phase Contrast
2. confocal laser
3. Differential Interference Contrast
4. Transmission Electron Microscope
5. Scanning Electron Microscope
Bonus: Diplococcus? not sure bc there's a shell surrounding it
Btw: links kinda gave answers away
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


Seven Lakes High School '21

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Tailsfan101
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Re: Microbe Mission B/C

Postby Tailsfan101 » April 1st, 2018, 2:23 pm

Nano1llus10n wrote:
Tailsfan101 wrote:Nobody seems to be answering The48thYoshi's questions, so I'll start this up again.

Identify the following microscopes based on images taken with them.
1
Image

2
Image

3
Image

4
Image

5
Image

Bonus: What bacterial shape appears to be shown in 3?


Answer
1. Phase Contrast
2. confocal laser
3. Differential Interference Contrast
4. Transmission Electron Microscope
5. Scanning Electron Microscope
Bonus: Diplococcus? not sure bc there's a shell surrounding it
Btw: links kinda gave answers away

All correct; Your turn.
2019 Treasure Valley Homeschool Wiki
2018
State/Nats
CB: 1/35
RS: 1/44
DD: 2/37
MM: 3/46

2019
Mini-Inv./DISCO/State/Nats
RS: 1/2/1/-
DD: -/3/2/-
HD: 2/4/4/-
CB: 3/6/1/-
ELG: -/6/-/-
GLM: -/-/-/31
WIDI: -/-/-/24


Possible 2020 events: DD, GLM, Code, WIDI, 4N6

Assassinator for games #118 and 136

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Nano1llus10n
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Re: Microbe Mission B/C

Postby Nano1llus10n » April 1st, 2018, 3:38 pm

1. What are HIV's primary and secondary receptors needed for entry?
2. Which glycoprotein on HIV's surface binds to the primary receptor?
3. Which SIV from which animal host is most closely related to HIV-1? (be specific)
4. Where is HIV-2 largely confined to due to its poor capacity for transmission?
5. What rare genetic mutation (mostly found in Eurasian descent) causes the individual to be resistant to HIV?
2017-2018 (Div C)
Event: MIT/R/S/N
Anatomy and Physiology: 8/3/2/26
Helicopters: 11/-/2/43
Microbe Mission: 13/2/2/8

2018-2019 (Div C)
Event: R/S/N
Anatomy and Physiology: 1/2/8
Designer Genes: 1/2/4
Protein Modeling: 1/3/2
Wright Stuff: 2/2/9


Seven Lakes High School '21

The48thYoshi
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Re: Microbe Mission B/C

Postby The48thYoshi » April 2nd, 2018, 11:19 am

Nano1llus10n wrote:
The48thYoshi wrote:This might be a little too specific :?
Scenario: A 28 year old man returning from a visit to the Middle East is complaining of abdominal pain, loss of appetite, fever, and intestinal blockage. Further testing reveals a palpable mass near the right Iliac fossa. It was suspected that the man had acute appendicitis and as a result, was opened up for an appendectomy. Following the incision, an unusual view lay before the doctors. A resection exam was then performed, revealing epithelioid granulomas along with necrosis as well as langerhans giant cells. The surgeons involved were immediately put into quarantine, along with the patient himself.
1. What disease did the man have?
2. What is the agent that causes the disease (domain and specific scientific name)
3. What medications should be prescribed?
4. What are some common side effects of these medications?
5. What are risk factors for this disease?
6. What risk factors are present in this specific case?
7. What signs and symptoms present helped the doctors diagnose the disease?


Maybe?
1. Tuberculosis
2. Bacteria; Mycobacterium tuberculosis
3. tetracycline
4. dizziness, vomiting, diarrhea, sore throat
5. traveling to endemic areas
6. traveling to Middle East
7. not appendicitis but still has a palpable mass near the right iliac fossa, epitheliod granulomas w/ necrosis & Langerhans giant cells.


All correct
aeshs ‘22

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Re: Microbe Mission B/C

Postby fabishkf » April 11th, 2018, 6:46 pm

Here's a question since this hasn't been posted on lately:

A drop of immersion oil has been placed between the objective lens and cover slip in a compound light microscope. Given the index of refraction of the immersion oil is 1.515, the wavelength of light being used is blue (0.45um) and the resolution of the microscope is .2um, find the one-half angular aperture of the microscope.
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National tournaments: 2016 Stout, 2017 Wright State division B, 2018 CSU, 2019 Cornell division C
2019 SONT at Cornell: 2nd Geologic Mapping, 6th Fossils

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Re: Microbe Mission B/C

Postby Alex-RCHS » April 12th, 2018, 6:09 pm

fabishkf wrote:Here's a question since this hasn't been posted on lately:

A drop of immersion oil has been placed between the objective lens and cover slip in a compound light microscope. Given the index of refraction of the immersion oil is 1.515, the wavelength of light being used is blue (0.45um) and the resolution of the microscope is .2um, find the one-half angular aperture of the microscope.

this?
2.745
it seems far too large though... maybe i should divide it in half? i'm using this equation: δ = 1.22 x wavelength / (N.A. objective + N.A. condenser)
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fabishkf
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Re: Microbe Mission B/C

Postby fabishkf » April 12th, 2018, 8:08 pm

Answer
Not quite. How I understand it, the half numerical aperture is an angle measurement, so the max value would be 90 (180 would be the max for the angular aperture, and would occur when the cover slip is touching the objective lens). So, it'll be larger than 2.745. To solve this problem, you would first solve for the numerical aperture with the resolution equation (resolution = wavelength / 2*NA) then use that to solve for one-half angular aperture in the numerical aperture equation. So the NA is 1.125, and the one-half angular aperture is 47.95 degrees. You can also use the resolution equation resolution = 1.22*wavelength / numerical aperture, which I think is what you were using (except in this problem I was talking about the NA of the entire microscope, didn't factor in that both the condenser and the objective would have a numerical aperture; probably should've specified that). I think the formula varies based on the microscope, but I'm not sure.
Hamilton Middle School '17
Madison West High School '21
National tournaments: 2016 Stout, 2017 Wright State division B, 2018 CSU, 2019 Cornell division C
2019 SONT at Cornell: 2nd Geologic Mapping, 6th Fossils


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