Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5, Problem 10MCQ
Which culture uses the most glucose?
Use the following choices to answer questions.
- a. E. coli growing in glucose broth at 35°C with O2 for 5 days
- b. E. coli growing in glucose broth at 35°C without O2 for 5 days
- c. both a and b
- d. neither a nor b
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Below is shown a growth curve for an E. coli culture. As indicated, the culture was incubated in the absence of a carbon source for 2 hours until Glucose and Lactose were added; Glucose was used up after 5 hours, and Lactose was used up after 8 hours. During the time-course, you take four samples, labeled A-D, after 1, 3, 7 and 9 hours, respectively, as indicated under the graph. Assuming there is cAMP present at t=0, for each sample identify whether CAP and/or the Lac Repressor would be bound to the DNA, and explain why.
t /g = (Log Nt – Log N0) /0.301
I introduce a loopful of Escherichia coli cells (say, 1000) into 10 mL of Nutrient Broth at 8 p.m. the night before your lab. The cells were taken from a culture plate (Nutrient Agar) held at 37°C, and inoculated into broth at the same temperature. They were held at 37°C overnight in a shaking water bath. At what time would the culture reach the Stationary Phase? Recall that doubling time under optimal conditions (these are) is 20 minutes.
A growing bacterial culture has 10,000 CFU/mL at noon and 10,000,000 CFU/mL at 6 p.m. What is the generation time under these conditions? What are your assumptions?
At midnight you inoculate 10 mL of a culture of Enterococcus with 103 cells/mL into 990 mL of the same medium, held under the same conditions as the original culture. At what time would the culture reach 107 cells/mL? Assume exponential growth over the period. Assume that g=half an hour. Note: We worked a different variant of this problem in…
Answer the following.
A. Which part of the refrigerator should be used
for storing raw meat?
B. How long can raw meat stay in fridge?
C. At what temperature should meat be
refrigerated?
Chapter 5 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 5 - Prob. 1RCh. 5 - DRAW ITUsing the diagrams below, show each of the...Ch. 5 - DRAW IT An enzyme and substrate are combined. The...Ch. 5 - Define oxidation-reduction, and differentiate the...Ch. 5 - There are three mechanisms for the phosphorylation...Ch. 5 - All of the energy-producing biochemical reactions...Ch. 5 - Fill in the following table with the carbon source...Ch. 5 - Write your own definition of the chemiosmotic...Ch. 5 - Why must NADH be reoxidized? How does this happen...Ch. 5 - NAME IT What nutritional type is a colorless...
Ch. 5 - Which substance in the following reaction is being...Ch. 5 - Which of the following reactions produces the most...Ch. 5 - Prob. 3MCQCh. 5 - Which of the following compounds has the greatest...Ch. 5 - Prob. 5MCQCh. 5 - Prob. 6MCQCh. 5 - Which culture produces the most lactic acid? Use...Ch. 5 - Which culture produces the most ATP? Use the...Ch. 5 - Which culture uses NAD+? Use the following choices...Ch. 5 - Which culture uses the most glucose? Use the...Ch. 5 - Explain why, even under ideal conditions,...Ch. 5 - The following graph shows the normal rate of...Ch. 5 - Compare and contrast carbohydrate catabolism and...Ch. 5 - How much ATP could be obtained from the complete...Ch. 5 - The chemoautotroph Acidithiobacillus can obtain...Ch. 5 - Haemophilus influenzae requires hemin (X factor)...Ch. 5 - The drug Hivid, also called ddC, inhibits DNA...Ch. 5 - The bacterial enzyme streptokinase is used to...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Figure 11.6 Label the features of the skin.
Laboratory Manual For Human Anatomy & Physiology
Explain why hyperthermophiles do not cause disease in humans.
Microbiology with Diseases by Taxonomy (5th Edition)
What are the cervical and lumbar enlargements?
Principles of Anatomy and Physiology
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
Seeley's Anatomy & Physiology
Knowledge Booster
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
- Which of the following results from TSI test is FALSE? A. Yellow slant, yellow butt, split agar means glucose, lactose and/or sucrose fermented gas produced B. Yellow butt, red slant means glucose only fermented C. Black slant, red butt means peptones were catabolized D. Red slant, black butt means glucose fermented hydrogen sulfide gas produced E. Red butt, red slant means all sugars fermented, no gas producedarrow_forwardYour nasal sample showed colonies with a clear halo around them on blood agar. What can you determine based on that observation? a. The organism is a mannitol fermenter b. The organism is able to utilize starch c. The organism is reducing the hemoglobin and damaging the erythrocytes d. The organism is beta-hemolytic e. The organism is unable to use red blood cells as a nutrient sourcearrow_forwardDescribe what the plate in each scenario looks like: A. Bacteria grows on mannitol salt agar and is negative for mannitol fermentation B. Bacteria grows on EMB agar and is positive for lactose fermentation C. Bacteria grows on MacConkey agar and is negative for lactose fermentationarrow_forward
- Describe how each of the following would appear when grown on EMB agar: a. Escherichia coli b. Pseudomonas aeruginosarrow_forwarduse these OD numbers to plot growth curve for E. coli K12- and estimate generation time for this culture. Table 1. Absorbance (O.D.600) measured for growing culture of E. coli K12 (time course) Incubation time O.D.600 Incubation time O.D.600 O min 3 hrs 3 hrs 30 min 4 hrs 4 hrs 30 min 5 hrs 5 hrs 30 min 0.11 1.75 30 min 0.20 1.94 1 hr 1 hr 30 min 2 hrs 2 hrs 30 min 0.27 2.24 0.51 2.48 2.31 2.19 0.65 1.30arrow_forwardFill up the table below. For inferences, indicate the identity of the macronutrient being tested in milk Chemical Test Observations Inferences a. Phenolphthalein test b. Biuret Test c. Molisch Test Film Formation What is observed during boiling of milk? Explain your observation and identify the milk component that was formed. Separation of Casein and Whey 3.1 What is observed during the addition of acetic acid in milk? Explain your observations by identifying the milk components that were formed. 3.2 Fill up the table below to summarize the confirmatory test for casein and whey. Test Sample Filtrate Residue / Precipitate Milk Component Reagents Observations Inferences 3.3 Give the function or importance of casein and whey. Test for Milk Fat Briefly describe how milk fat is being tested?arrow_forward
- Four tubes were prepared as shown in the figure: In any test tube, the starch is digested faster: A B C Darrow_forwardIf you streak a sample from your nose onto a Mannitol salt agar plate and the medium turns yellow, what does that tell you? (choose all that apply) a. The organism is a yeast b. The organism ferments mannitol c. The organism is beta-hemolytic d. The organism is likely Staphylococus aureus e. The organism is acid tolerantarrow_forwardThe diagram shows the growth curve of Escherichia coli in a suspension culture containing glucose and lactose. Optical density is used to measure the concentration of bacteria in the suspension culture. Use the image to answer the question. Which statement BEST supports the information in the graph? A. E. coli metabolizes lactose and glucose. B. E. coli metabolizes glucose first, then lactose. C. E. coli metabolizes lactose first, then glucose. D. E. coli metabolizes lactose and glucose at the same time.arrow_forward
- Examine the given table below. What conclusions can be drawn from the data regarding the effects of varying pH in bacterial activity? Explain and Justify your points. Table 1. Effect of different pH on Antibacterial Growth Diameter of Inhibition zone (mm) of different pH 7 6 8 9 21 15 12 34 21 15 41 33 21 22 20 0 Test organisms Escheichia coli S. typhi Bacillus subtilis 5.8 33 30 44 42 54 50 30 Staphylococcus 33 aureusarrow_forwardConsider the table below. What is the TDT for E. coli at 70 C? Please include the unit.arrow_forwardExplain the results in detail for population growth of E.coli at various temperatures at different timesarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY