Q1 The ability of microbes to multiply or increase their population size is extremely important in microbial control, infectious disease and biotechnology. a) List FOUR (4) concepts of microbial survival that would be beneficial in food preservation. b) Explain any THREE (3) of the microbial survival concepts as answered in Q1 (a). Give an example to each of the concept to support your answer. Q2 Wendy leaves her lunchbox that contains a crab salad with mayonnaise dressing in the dining room at her home. She only realized when she reached at the office elevator. She recalls turning off the air conditioning before leaving at 7.30 am, which leave the room at a temperature of 30 to 35°C. a) Explain whether the salad can still be eaten if Wendy comes home at 8.30 pm. b) Assume that original number of bacterial cells present in the salad is 150, determine the population of the bacterial cells if the food is sitting in the dining room for 8 hours and state TWO (2) inferences that based on your finding. (8 marks) c) Based on your answer in Q2 (b), show how the rate of microbial population of crab salad if the incubation period is extended up to 20 hours.
Q1 The ability of microbes to multiply or increase their population size is extremely important in microbial control, infectious disease and biotechnology. a) List FOUR (4) concepts of microbial survival that would be beneficial in food preservation. b) Explain any THREE (3) of the microbial survival concepts as answered in Q1 (a). Give an example to each of the concept to support your answer. Q2 Wendy leaves her lunchbox that contains a crab salad with mayonnaise dressing in the dining room at her home. She only realized when she reached at the office elevator. She recalls turning off the air conditioning before leaving at 7.30 am, which leave the room at a temperature of 30 to 35°C. a) Explain whether the salad can still be eaten if Wendy comes home at 8.30 pm. b) Assume that original number of bacterial cells present in the salad is 150, determine the population of the bacterial cells if the food is sitting in the dining room for 8 hours and state TWO (2) inferences that based on your finding. (8 marks) c) Based on your answer in Q2 (b), show how the rate of microbial population of crab salad if the incubation period is extended up to 20 hours.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Q1
The ability of microbes to multiply or increase their population size is extremely important in
microbial control, infectious disease and biotechnology.
a) List FOUR (4) concepts of microbial survival that would be beneficial in food
preservation.
b) Explain any THREE (3) of the microbial survival concepts as answered in Q1 (a). Give an
example to each of the concept to support your answer.
Q2
Wendy leaves her lunchbox that contains a crab salad with mayonnaise dressing in the dining
room at her home. She only realized when she reached at the office elevator. She recalls
turning off the air conditioning before leaving at 7.30 am, which leave the room at a
temperature of 30 to 35°C.
a) Explain whether the salad can still be eaten if Wendy comes home at 8.30 pm.
b) Assume that original number of bacterial cells present in the salad is 150, determine
the population of the bacterial cells if the food is sitting in the dining room for 8 hours
and state TWO (2) inferences that based on your finding. (8 marks)
c) Based on your answer in Q2 (b), show how the rate of microbial population of crab
salad if the incubation period is extended up to 20 hours.
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