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a. Some microbes can utilize fermentation to make ATP. Compare and contrast fermentation and aerobic respiration, including the typical inputs and outputs of each. b. Two liquid culture flasks of E. coli are grown in the same medium (2% glucose and amino acids) and at the same temperature (37°C). Culture #1 is well aerated. Culture #2 is anoxic. After 16 hours, the following observations are made: • Culture # 1 has a high cell density; the cells appear to be in stationary phase, and the glucose level in the medium is reduced to 1.2%. • Culture #2 has a low cell density; the cells appear to be in logarithmic phase, although their doubling time is prolonged (over 1 hour). The glucose level is reduced to 0.2%. Why does Culture #2 have so little glucose remaining relative to Culture #1, even though Culture #2 displayed slower growth and has less biomass?

a. Some microbes can utilize fermentation to make ATP. Compare and contrast fermentation and aerobic respiration, including the typical inputs and outputs of each. b. Two liquid culture flasks of E. coli are grown in the same medium (2% glucose and amino acids) and at the same temperature (37°C). Culture #1 is well aerated. Culture #2 is anoxic. After 16 hours, the following observations are made: • Culture # 1 has a high cell density; the cells appear to be in stationary phase, and the glucose level in the medium is reduced to 1.2%. • Culture #2 has a low cell density; the cells appear to be in logarithmic phase, although their doubling time is prolonged (over 1 hour). The glucose level is reduced to 0.2%. Why does Culture #2 have so little glucose remaining relative to Culture #1, even though Culture #2 displayed slower growth and has less biomass?

Human Anatomy & Physiology (11th Edition)
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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a. Some microbes can utilize fermentation to make ATP. Compare and contrast fermentation and aerobic respiration, including the typical inputs and outputs of each. b. Two liquid culture flasks of E. coli are grown in the same medium (2% glucose and amino acids) and at the same temperature (37°C). Culture #1 is well aerated. Culture #2 is anoxic. After 16 hours, the following observations are made: • Culture # 1 has a high cell density; the cells appear to be in stationary phase, and the glucose level in the medium is reduced to 1.2%. • Culture #2 has a low cell density; the cells appear to be in logarithmic phase, although their doubling time is prolonged (over 1 hour). The glucose level is reduced to 0.2%. Why does Culture #2 have so little glucose remaining relative to Culture #1, even though Culture #2 displayed slower growth and has less biomass?
Transcribed Image Text:a. Some microbes can utilize fermentation to make ATP. Compare and contrast fermentation and aerobic respiration, including the typical inputs and outputs of each. b. Two liquid culture flasks of E. coli are grown in the same medium (2% glucose and amino acids) and at the same temperature (37°C). Culture #1 is well aerated. Culture #2 is anoxic. After 16 hours, the following observations are made: • Culture # 1 has a high cell density; the cells appear to be in stationary phase, and the glucose level in the medium is reduced to 1.2%. • Culture #2 has a low cell density; the cells appear to be in logarithmic phase, although their doubling time is prolonged (over 1 hour). The glucose level is reduced to 0.2%. Why does Culture #2 have so little glucose remaining relative to Culture #1, even though Culture #2 displayed slower growth and has less biomass?
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