Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 6, Problem 5R
By deep-freezing, bacteria can be stored without harm for extended periods. Why do refrigeration and freezing preserve foods?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In an experiment, the bacteria were placed in dropper bottles containing glycerol as a carbonsource. Why did the culture have to be incubated for an hour in the new media?
Why is there a need for an incubator in the lab? How about incubating cultures at room temperature? How can this affect microbes?
Why do many bacteria grow over a wide range of temperature?
Chapter 6 Solutions
Microbiology: An Introduction
Ch. 6 - Prob. 1RCh. 6 - Prob. 2RCh. 6 - Prob. 3RCh. 6 - Seven methods of measuring microbial growth were...Ch. 6 - By deep-freezing, bacteria can be stored without...Ch. 6 - A pastry chef accidentally inoculated a cream pie...Ch. 6 - Nitrogen and phosphorus added to beaches following...Ch. 6 - Differentiate complex and chemically defined...Ch. 6 - DRAW IT Draw the following growth curves for E....Ch. 6 - NAME IT A prokaryotic cell hitched a ride to Earth...
Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Two culture media were inoculated with four...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Use the following graph to answer questions 3 and...Ch. 6 - Assume you inoculated 100 facultatively anaerobic...Ch. 6 - The term trace elements refers to a. the elements...Ch. 6 - Which one of the following temperatures would most...Ch. 6 - Which of the following is not a characteristic of...Ch. 6 - Which of the following types of media would not be...Ch. 6 - An organism that has peroxidase and superoxide...Ch. 6 - E. coli was incubated with aeration in a nutrient...Ch. 6 - Clostridium and Streptococcus are both...Ch. 6 - Most laboratory media contain a fermentable...Ch. 6 - Flask A contains yeast cells in glucose-minimal...Ch. 6 - Clinical Applications and Evaluation 1. Assume...Ch. 6 - Heat lamps are commonly used to maintain foods at...Ch. 6 - The number of bacteria in saliva samples was...
Additional Science Textbook Solutions
Find more solutions based on key concepts
How does the removal of hydrogen atoms from nutrient molecules result in a loss of energy from the nutrient mol...
Seeley's Anatomy & Physiology
6. How can you use the features found in each chapter?
Human Anatomy & Physiology
2. Why is it that the range of resting blood pressures of humans is best represented by a bell-shaped curve co...
Human Biology: Concepts and Current Issues (8th Edition)
Physiology a. deals with the processes or functions of living things. b. is the scientific discipline that inve...
SEELEY'S ANATOMY+PHYSIOLOGY
The term ‘spore’.
Biology Science Notebook
11. In the early 1800s, French naturalist Jean Baptiste Lamarck suggested that the best explanation for the rel...
Campbell Biology: Concepts & Connections (8th Edition)
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
- A microbe cannot grow without using enzymes. Explain why bacteria are limited to growth within a given temperature range. Explain why bacteria are limited in growth within a specific pH range.arrow_forwardWhy do we need to kill bacteria in order to clean an object?arrow_forwardplacing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry heat in incineration. is is true/false?arrow_forward
- If the temperature of the incubator were to be increased from 35 to 45°C, how would this affect the bacterial growth curve of E. coli?arrow_forwardIf the original number of cells in a sample was 12,000, how many bacteria will be present in 12 hours when the generation time is 15 minutes?arrow_forwardA culture of bacteria is found to have a DRT of 2 minutes. How long would it take to reduce the total number of bacteria from 1,000,000 organisms/ml to 1,000 organisms/ml?arrow_forward
- In a campus-wide screen for microbes, you find DNA from the bacterial species that causes the bubonic plague, Yersinia pestis. You take the sample back to the lab, and try to grow (very carefully), but can't culture the organism. Provide two possible explanations for why you can't grow this sample in the lab.arrow_forwardWhen conditions are unfavorable, some bacteria:arrow_forwardJams, jellies, preserves, honey, and other foodstuffs with a high sugar content hardly ever become contaminated by bacteria, even when the food containers are left open at room temperature. Why is this?arrow_forward
- If the temperature of the incubator were to be increased from 35 to 45°C, how would this affect the bacterial growth curve of E. coli? (optimum temperature 20o-40oC; most human pathogens)arrow_forwardWhy are many bacteria considered useful?arrow_forwardWhen the microbes were exposed to different temperatures how was it possible to see minimal growth? What had to be functional in order for growth to occur?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Bacterial Structure and Functions; Author: Osmosis;https://www.youtube.com/watch?v=b15Hy3jCPDs;License: Standard youtube license