Ask the question based on the attached diagrams:1. Write a conclusion explaining the relationship between time and temperature as illustrated in the two figures. 170°F75°C« Death in a few seconds« Death in several seconds160°F70°C65°C « Death in a few minutes« Death in several minutes« Death after a few hours150°F140°F 60°C130F 55°CS0°C120'F« Dangerous45"C110°F40°C« Very dangerousDangerous ina few hours100"F35°Cd06-30°C80°F25°C Dangerous70°F20°C60T« Dangerous in several hours1550°F10°C« Dangerous in a few days40°F 75"C« Dangerous in a few weeks« Slow die-off for vegetative forms of mostbacteria, but may survive for months30r-S"CFigure 2.7 Effects of time and temperature on bacteria. Redrawn from an illustrationby Frank Bryan, with permission of Food Safety Magazine. doi:10.1128/9781555817206.ch02.f02.07 60140Minimal to no hazardsand risks; safety astemperatures increase5513050 -12045Hazard, but lower 110risk because ofspoilage; discarditem40 - Hazard,decreasing35Hazard,highestrisk100risk9030Hazard,high risk25 --8020 -701560Decreasing to nohazard and low risk105040305 7 1020 3050 70 100200 300 500HoursFigure 2.8 A more sophisticated examination of time and temperature allowsone to evaluate risk and hazard. Redrawn from an illustration by Frank Bryan,with permission of Food Safety Magazine. Note that the x axis is on a log scale.doi: 10.1128/9781555817206.ch02.f02.08Temperature ("C)Temperature (F)

Mesophilic bacteria are those bacteria that grow well in temperatures ranging between 20 °C to about…

170F 75C « Death in a few seconds 70°c « Death in several seconds 65°C « Death in a few minutes 140F 60c« Death in several minutes 160F 150F 130 55C Death after a few hours « Dangerous 120F 45°C 110T 40°C Very dangerous Dangerous in a few hours 100F 15°C 90T 30°C 80F 25c« Dangerous 70F 20C 60°T Dangerous in several hours 15C 50F « Dangerous in a few days 40F 75°C Dangerous in a few weeks vc « Slow die-off for vegetative forms of most bacteria, but may survive for months 30T e 2.7 Effects of time and temperature on bacteria. Redrawn from a ank Bryan, with permission of Food Safety Magazine. doi:10.1128/97 02 07

170F 75C « Death in a few seconds 70°c « Death in several seconds 65°C « Death in a few minutes 140F 60c« Death in several minutes 160F 150F 130 55C Death after a few hours « Dangerous 120F 45°C 110T 40°C Very dangerous Dangerous in a few hours 100F 15°C 90T 30°C 80F 25c« Dangerous 70F 20C 60°T Dangerous in several hours 15C 50F « Dangerous in a few days 40F 75°C Dangerous in a few weeks vc « Slow die-off for vegetative forms of most bacteria, but may survive for months 30T e 2.7 Effects of time and temperature on bacteria. Redrawn from a ank Bryan, with permission of Food Safety Magazine. doi:10.1128/97 02 07

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter44: Ecology And The Biosphere

Section: Chapter Questions

Problem 12RQ: Which of the following is an example of a weather event? The hurricane season lasts from June 1...

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