Tuesday, April 22, 2014

Review Session 20140422 A

28 students attended this session

Q1
Fungal toxin included in final examination? 

A
Topic not covered--no, not included in final examination.

Q2
Soybean paste included?

A
Yes

Q3
Outbreak study--what factors would be considered important?

A
Follow the observation and make a story with more specific problems identified, e.g., poor storage, poor preparation, etc.

Q4
vCJD vs CJD?

A
v CJD


CJD
Anxiety, depression and behavioral problem (like BSE)


Mental deterioration or ataxia
Extensive PrP amyloid deposits (like BSE)


Usually none
PrPSc showed the same protease resistant pattern of the BSE


Q5
What to put into answer for bacterial respiration?

A
Keypoints are important. When answer, follow the order of importance of the information. Respirtion: aerobic and anaerobic....but never include fermentation.

Q6
Outbreak investigation question: Just a story based on attack rate and rationalization  enough?

A
Yes, quite good already. But to get full marks, the story should
include analysis, especially elimination of some other possibilities.

Q7
F value and D value calculation question.

A
Pay attention to details. Think about the situation carefully. Question each year may be different from those from previous years.

Q8
Cell density results presentation? Can it be zero?

A
No, if there is a number, you have to report the number. But you do not have to write all the zeros but just something like 1x10-999

Q9
Apple juice--high sugar content--yeast or acetobacter, which grows faster?

A
Acetobacter uses ethanol to grow and makes acetic acid, vinegar, yeast uses sugar to grow and makes ethanol, so.......................

Q10
Food characteristics -->which microorganism?

A
Make sure you consider all characteristics and it is always relative among microorganisms.




Different pattern

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