Brock Biology of Microorganisms (15th Edition)
Brock Biology of Microorganisms (15th Edition)
15th Edition
ISBN: 9780134261928
Author: Michael T. Madigan, Kelly S. Bender, Daniel H. Buckley, W. Matthew Sattley, David A. Stahl
Publisher: PEARSON
bartleby

Concept explainers

Question
Book Icon
Chapter 3, Problem 2AQ
Summary Introduction

To explain:

The following observation in light of the redox tower: Escherichia coli cells fermenting glucose grow faster when nitrate (NO3-) is supplied to the culture and then grow even faster when the culture is aerated.

Concept introduction:

An oxidation is a process in which electrons are removed from a substance and in the reduction process; electrons are added to the substance. The combination of these processes is termed as redox (oxidation-reduction) reaction. The differences in the redox reaction can be identified by comparing the standard reduction potential (E0).

Blurred answer
Students have asked these similar questions
Menaquinones is produced by Flavobacterium meningosepticum via submerged fermentation with 60% working volume in 30-L fermentation. To obtain the crude menaquinones, the fermentation medium is centrifuged at 12,000 rpm for 15 minutes. The vacuum-freeze dried particles are crushed and collected. After that the samples are treated with methanol for 20 minutes. To remove polar lipid compounds from bacterial cells, HZ816 macroporous adsorption resin column is used with methanol-dichloromethane (l:1) as mobile phase and flow rate of 0.75 mL/min. Rotary evaporation at 500 C is carried out to concentrate the eluent. After that, the concentrated sample is purified with Bio-BeadsTM S-X3 to remove components without UV absorption. To obtain the homolog purified menaquinones, RP-C18 column is used. Recrystallization is carried out to obtain pure crystalized menaquinones. Answer the following: Indicate how to obtain the sample in the methanol solvent.  Three different chromatography are used in…
For the production of a secondary metabolic by Streptomyces coelicolor, a fed batch was performed. At the end of the single batch phase, the following conditions were reached in the reactor: V=10000L, cell concentration X=10g/L and product concentration P=0.1g/L. The feeding was then started with constant flow F= 200L/h, for 100h. Knowing that the substrate concentration in the feeding medium was SF= 80g/L and in the fermentation medium it was practically null, calculate: a) The final concentration of cells and productb) If the reactor were fed with a constant dilution rate (D), what should be the value of D used to reach the same cell concentration obtained in the situation with constant flow?μp= 0.01 g of product/ (g of cells.h)Y x/s = 0.15g cells/g of substrate
Two flasks of E. coli are grown in batch culture in the same medium (2% glucose and amino acids; no nitrate) and at the same temperature (378C). 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?

Chapter 3 Solutions

Brock Biology of Microorganisms (15th Edition)

Ch. 3.4 - What is free energy?Ch. 3.4 - Prob. 2MQCh. 3.4 - Using Table 3.2, calculate G0 for the reaction...Ch. 3.4 - Prob. 1CRCh. 3.5 - Prob. 1MQCh. 3.5 - Prob. 2MQCh. 3.5 - Prob. 3MQCh. 3.5 - Prob. 1CRCh. 3.6 - Prob. 1MQCh. 3.6 - Prob. 2MQCh. 3.6 - Prob. 3MQCh. 3.6 - Prob. 1CRCh. 3.7 - How much free energy is released when ATP is...Ch. 3.7 - Prob. 2MQCh. 3.7 - Prob. 3MQCh. 3.7 - Prob. 1CRCh. 3.8 - Which reactions in glycolysis are redox steps?Ch. 3.8 - Prob. 2MQCh. 3.8 - Prob. 3MQCh. 3.8 - How is ATP made in fermentation and in...Ch. 3.9 - How many molecules of CO2, NADH, and FADH2 are...Ch. 3.9 - What two major roles do the citric acid cycle and...Ch. 3.9 - Why is the glyoxylate cycle necessary for growth...Ch. 3.9 - Prob. 1CRCh. 3.10 - Prob. 1MQCh. 3.10 - Which electron carriers described in this section...Ch. 3.10 - List some of the key electron carriers found in...Ch. 3.11 - How do electron transport reactions generate the...Ch. 3.11 - How much energy is released per NADH oxidized...Ch. 3.11 - What structure in the cell links the proton motive...Ch. 3.11 - Prob. 1CRCh. 3.12 - Prob. 1MQCh. 3.12 - Prob. 2MQCh. 3.12 - Prob. 3MQCh. 3.12 - What is the major difference between aerobic...Ch. 3.13 - What form of activated glucose is used in the...Ch. 3.13 - Prob. 2MQCh. 3.13 - What functions does the pentose phosphate pathway...Ch. 3.13 - What is the importance of the enzyme...Ch. 3.14 - Prob. 1MQCh. 3.14 - List the steps required for the cell to...Ch. 3.14 - Which nitrogen bases are purines and which are...Ch. 3.14 - Prob. 1CRCh. 3.15 - Prob. 1MQCh. 3.15 - Prob. 2MQCh. 3.15 - Describe the process by which a fatty acid such as...Ch. 3 - Using the data of Figure 3.10, predict the...Ch. 3 - Prob. 2AQ
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Curren'S Math For Meds: Dosages & Sol
Nursing
ISBN:9781305143531
Author:CURREN
Publisher:Cengage