Microbiology: Principles and Explorations
10th Edition
ISBN: 9781119390114
Author: Black
Publisher: WILEY
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 7, Problem 1.1SC
What are the differences between the
Expert Solution & Answer
Summary Introduction
To describe: The difference between the lag phase and the log phase of a bacterial growth curve.
Introduction: The bacteria is the unicellular prokaryotic organism that maintains a definite shape since it contains the rigid cell wall. It is classified into different types based on the structure namely coccus (spherical shaped), Bacillus (rod-shaped), filamentous, spirilla (spiral-shaped), appendaged and pleomorphic bacteria. The structure of the bacteria can be viewed under the microscope by using the staining methods.
Explanation of Solution
The difference between the lag phase and log phase is described as follows:
Lag phase | Log phase |
|
|
|
|
|
|
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
What is the equation that represents the mass balance of the exponential phase of bacterial growth?
Name each variable.
What factors may be the cause for an extended lag phase in a bacteria growth curve?
What factors can cause a lag phase in a bacterial growth curve?
Chapter 7 Solutions
Microbiology: Principles and Explorations
Ch. 7 - What are the differences between the lag phase and...Ch. 7 - How does logarithmic rate of increase differ from...Ch. 7 - Prob. 1.3SCCh. 7 - Why does a direct microscopic count of bacteria...Ch. 7 - What does the ending -phile mean? Distinguish...Ch. 7 - What enzymes do most obligate anaerobes lack? How...Ch. 7 - Prob. 2.3SCCh. 7 - Prob. 3.1SCCh. 7 - Distinguish between the various kinds of media:...Ch. 7 - What is the purpose of a stock culture? Why is it...
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
- Describe the following phases of the bacterial growth curve and draw them out:a. Lag phaseb. Logarithmic phasec. Stationary phased. Decline/death phasearrow_forwardIn what phase of the bacterial growth curve do cells die at rapid rates?arrow_forward+ Slider1 + Slider2 108 107 106 105 104 30 60 90 120 150 180 210 240 Time in minutes Determine the following: 1. The shortest generation time (shortest cell doubling time, in mins) of the organism 2. The growth rate of the organism at the point where its generation time is shortest 3. Describe the organism's growth curve using the numerical data you obtained from your calculations of generation time and growth rate. Cell numbersarrow_forward
- List the four phases of the bacterial growth curve:arrow_forwardUse the following passage to answer 2 consecutive questions. A urine specimen was collected in a container and placed on the central desk for delivery at 10:00 am. The specimen is not sent to the lab until 5 hours later (3:00 pm). The sample time was marked by the central clerk as collected at 4:00 pm. The bacterial species has a generation time of 30 minutes at room temperature. There are 100 bacterial cells/ml at the time of collection (10:00 am). The laboratory will cite a bacterial infection at more than 1000 bacterial cells/ml.arrow_forwardYou have a starter culture containing 8 x 109 cells per mL, from which you take 10mL to inoculate a fresh 1 L culture. After 15 hours, the cell density of the new culture is 3 x 1012cells per mL. What are the generation time and the mean growth rate constant of theorganism in culture?arrow_forward
- The average size of cells during the exponential phase of growth is... A) Less than the lag phase B) Same as delay phase C) Constantarrow_forwardIn a certain culture of bacteria, the rate of increase is proportional to the number present. (a) If it is found that the number doubles in 6 hrs, how many may be expected at the end of 18 hrs? (b) If there are 102 at the end of 4 hrs, and 8 ∙ 102 at the end of 8 hrs, how many were there in the beginning?arrow_forwardAre you able to identify the lag, log, stationary and death phase in using these growth curves?Are you able to calculate the generation time for this microbe under the two conditions?arrow_forward
- Strain X. spp. is a rod-shaped, anaerobic, Gram-positive bacterium with peritrichous flagella and pili that could use glucose and dye as its sole carbon source. Answer the following sections (a, b and c). a) With a doubling time of 240 minutes and a starting population size of 10 bacteria cells. How many bacteria cells will be present after 72 hours, assuming no cell death? b) Draw the diagram and describe motility required for the bacteria to gradient concentration of attractant (food)? c) Draw the diagram of the up flow packed-bed column biofilm reactor under continuous operation and label completelyarrow_forwardSuppose that you were tasked with 4 cultures of a specific Bacteria Species in Luria Broth medium: (1) culture A – cells are in lag phase; (2) culture B – cell in log phase; (3) culture C – cells in stationary phase; and culture D – cells in decline phase. Imagine that you observe the growth rates of each culture in a fresh sterilized LB medium. Now, plot the outcome growth curves of cultures A, B, C and D in a single graph.arrow_forwardStrain X. spp. is a rod-shaped, anaerobic, Gram-positive bacterium with peritrichous flagella andpili that could use glucose and dye as its sole carbon source. Answer the following sections (a, band c).a) With a doubling time of 240 minutes and a starting population size of 10 bacteria cells. Howmany bacteria cells will be present after 72 hours, assuming no cell death?b) Draw the diagram and describe motility required for the bacteria to gradient concentrationof attractant (food)?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:9780815344322
Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education
Biochemical Tests-Part 1; Author: Southern Stacker;https://www.youtube.com/watch?v=a-i9vANfQWQ;License: Standard Youtube License