Microbe Mission B/C

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

Postby dcrxcode » November 19th, 2016, 6:53 pm

If a famity opens a can of beans that has botulism,

A. What is the bacteria causing it?

B. How can this bacteria be used for treatment? (Theoretically)

C. How can they tell there is botulism physically before eating?

D. If they ate it, what symptoms would they experience?
A. Clostridium botulinum
B. Raising an antitoxin against the bacteria.
C. Strong odors for certain types of the toxin or if a can containing food bulges outwards (the bacteria can produce gas)
D. Pain in the gut, weakened muscles, partial paralysis, blurred vision, weak eye muscles, drooping eyelids, dizziness, fatigue, nausea

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Re: Microbe Mission B/C

Postby rafaelnadal » November 20th, 2016, 9:43 am

If a famity opens a can of beans that has botulism,

A. What is the bacteria causing it?

B. How can this bacteria be used for treatment? (Theoretically)

C. How can they tell there is botulism physically before eating?

D. If they ate it, what symptoms would they experience?
A. Clostridium botulinum
B. Raising an antitoxin against the bacteria.
C. Strong odors for certain types of the toxin or if a can containing food bulges outwards (the bacteria can produce gas)
D. Pain in the gut, weakened muscles, partial paralysis, blurred vision, weak eye muscles, drooping eyelids, dizziness, fatigue, nausea
Correct! Your turn!

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Re: Microbe Mission B/C

Postby dcrxcode » November 20th, 2016, 10:41 am

Explain the difference between batch and continuous culture.

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Re: Microbe Mission B/C

Postby rafaelnadal » November 20th, 2016, 1:42 pm

Oops
Batch Culture- organisms are grown in a closed system, no nutrients are added or removed. Eventually organism reproduction rates slows due to lack of nutrients and excess waste. Continuous Culture- organisms are grown in a open system where nutrients are added at a steady rate, causing the cells to grow exponentially continuously until they reach a steady rate. Might be wrong, im a little unsure so :oops:
Last edited by rafaelnadal on November 21st, 2016, 8:09 am, edited 2 times in total.

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Re: Microbe Mission B/C

Postby dcrxcode » November 21st, 2016, 1:53 am

[spoier]Batch Culture- organisms are grown in a closed system, no nutrients are added or removed. Eventually organism reproduction rates slows due to lack of nutrients and excess waste.

Continuous Culture- organisms are grown in a open system where nutrients are added at a steady rate, causing the cells to grow exponentially continuously until they reach a steady rate. [/spoiler]

Might be wrong, im a little unsure so :oops:
All right! Don't forget to hide.

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Re: Microbe Mission B/C

Postby rafaelnadal » November 21st, 2016, 1:46 pm

oops hehe i forgot...


Question: A basketball player was sitting out during halftime, when one of her friends pointed to her neck and exclaimed "Marie, you have ringworm!"

Describe the causes and symptoms of ringworm and give the most probable place where Marie got the ringworm from (assume its somewhere in the school).

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Re: Microbe Mission B/C

Postby sciduck » November 21st, 2016, 4:49 pm

oops hehe i forgot...


Question: A basketball player was sitting out during halftime, when one of her friends pointed to her neck and exclaimed "Marie, you have ringworm!"

Describe the causes and symptoms of ringworm and give the most probable place where Marie got the ringworm from (assume its somewhere in the school).
Ringworm
Ringworm is caused by a fungal infection. I think it's zoonotic but getting if from an animal at school seems unlikely, so they must have gotten it from someone else. Maybe the showers? Symptoms would be a ton of circular rashes with a bumpy ring and dry skin inside.

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Re: Microbe Mission B/C

Postby sciduck » November 21st, 2016, 4:50 pm

Also dcrxcode, you may want to change your quote to hide the answer too.

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Re: Microbe Mission B/C

Postby rafaelnadal » November 21st, 2016, 4:55 pm

Correct,
my thoughts but yours work
the fungus is commonly found in lockers and swimming pools, so she may have contracted it in the locker room.
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Re: Microbe Mission B/C

Postby sciduck » November 21st, 2016, 5:00 pm

What is the Kirby-Bauer test and how do you set it up?

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Re: Microbe Mission B/C

Postby yang573 » January 11th, 2017, 5:33 pm

This thread died
The Kirby-Bauer test is a technique for determining the sensitivity of bacteria to antibiotics and/or the efficacy of certain antibiotics. 1. Prepare the bacteria in question. The bacteria should be in mid-log phase. 2. Prepare antibiotic disks from filter paper and the antibiotics in question. Make sure to create controls. 3. Spread bacteria on agar plates. Add antibiotic disks. 4. Incubate the disks. Check the area of inhibition around the antibiotic disks.
So much to do, so little time.

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Re: Microbe Mission B/C

Postby sciduck » January 12th, 2017, 7:26 pm

This thread died
The Kirby-Bauer test is a technique for determining the sensitivity of bacteria to antibiotics and/or the efficacy of certain antibiotics. 1. Prepare the bacteria in question. The bacteria should be in mid-log phase. 2. Prepare antibiotic disks from filter paper and the antibiotics in question. Make sure to create controls. 3. Spread bacteria on agar plates. Add antibiotic disks. 4. Incubate the disks. Check the area of inhibition around the antibiotic disks.
Yeah... :(
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Re: Microbe Mission B/C

Postby yang573 » January 17th, 2017, 3:44 pm

When do diatoms undergo sexual reproduction?
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Re: Microbe Mission B/C

Postby sciduck » January 17th, 2017, 4:29 pm

When do diatoms undergo sexual reproduction?
When they
get too small? I would guess when they are around half the original size
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Re: Microbe Mission B/C

Postby yang573 » January 21st, 2017, 7:16 pm

When they
get too small? I would guess when they are around half the original size
That's correct, since one sister cell gets smaller with every division. I'm not sure about the exact size though.
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