3-In the late 1700s, Lazzaro Spallanzani designed a different experiment to show that life did not arise spontaneously from food. He inferred that some foods spoil because of growing populations of microorganisms. Fill in the information requested below. Boiled meat broth Boiled meat broth Open flask Sealed flask Open flask (microorganisms appear in broth) Sealed flask

3-In the late 1700s, Lazzaro Spallanzani designed a different experiment to show that life did not arise spontaneously from food. He inferred that some foods spoil because of growing populations of microorganisms. Fill in the information requested below. Boiled meat broth Boiled meat broth Open flask Sealed flask Open flask (microorganisms appear in broth) Sealed flask

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter19: Biomedical Laboratory Instrumentation

Section: Chapter Questions

Problem 4Q

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The term "turbidity" in microbiology refers to: a cloudy appearance in broth, meaning microorganisms did grow a cloudy appearance in broth, meaning microorganisms did not grow a clear appearance in broth, meaning microorganisms did not grow the clump of cells at the top of a broth a clear appearance in broth, meaning microroganisms did grow
1. Table 1 lists a typical recipe for growing bacteria in the lab. A researcher discovered a potentially new species of bacterium from a soil sample and attempted to grow it in this media. Unfortunately, the bacterium did not grow. Identify at least three components that you suggest adding to the medium to enable growth. Provide a reason for adding each component. Table 1. per 1000 mL 1g Bacteria culture media NazHPO4•7H2O KH2PO4 3g 5 g 1 g 0.4% (wt/vol) 0.2% (wt/vol) NaCl NHẠC1 Glucose Casamino acids
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Many types of fruits and vegetables can be fermented into alcoholic beverages. Such was the case recently when prisoners in Utah attempted to make an illegal beverage called “pruno”; however, someone added a weeks-old baked potato to the mix, letting a microbe into the party who was clearly uninvited. Consumers of the pruno began to develop difficulty swallowing, vomiting, double vision, and muscle weakness; three required ventilation therapy. No deaths were attributed to the contaminated beverage. A) What nervous system disease were the prisoners suffering from, and what was the specific organism involved?
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Many types of fruits and vegetables can be fermented into alcoholic beverages. Such was the case recently when prisoners in Utah attempted to make an illegal beverage called “pruno”; however, someone added a weeks-old baked potato to the mix, letting a microbe into the party who was clearly uninvited. Consumers of the pruno began to develop difficulty swallowing, vomiting, double vision, and muscle weakness; three required ventilation therapy. No deaths were attributed to the contaminated beverage. Based on your knowledge of this disease, what form of treatment was used to successfully avoid the worst outcomes of the disease in these patients?
Listen Which of the following regarding controlling microbial growth is true? a) Microbial death rate increases with an increase in temperature b) The more microbes present, the shorter amount of time it will take to kill the population E c) Gram-positive bacteria tend to be more resistant to chemicals than gram- negative bacteria d) Microbial death rate increases as pH approaches 7 (neutral) Previous Page Submit Quiz $ R Next Page 5 of 10 questions saved % H K Page 4 of 10
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