Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
12th Edition
ISBN: 9780134605203
Author: Ted R. Johnson, Christine L. Case
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 14, Problem 2CT
How could you determine which of the following carbohydrates a bacterium fermented: mannitol, sorbitol, adonitol, or arabinose?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Provide the conditions (e.g., intrinsic properties, storage conditions, etc.) that will make the recovery of the following microorganisms in commercially sterile foods acceptable:
a) Obligate thermophilic sporeforming bacteria
b) Acid-tolerant microorganisms
c) Mesophilic or thermophilic sporeformers
If the result of an unknown bacteria is “poor growth” and “red growth,” can this result be interpreted as “organism does not ferment mannitol?” Explain why or why not.
If the result of an unknown bacteria is “good growth” and “yellow growth,” is the unknown bacteria more likely Staphylococcus aureus or Staphylococcus epidermidis?
Agar is a complex polysaccharide obtained from seaweed and cannot be digested by most microorganisms. Why does this property make agar an excellent solidifying agent for microbiological media?
Chapter 14 Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
Ch. 14 - Why are fermentation tubes evaluated at 24 and 48...Ch. 14 - If an organism metabolizes glucose aerobically,...Ch. 14 - Which of these media is selective?...Ch. 14 - Could an organism be a fermenter and also be both...Ch. 14 - How could you determine which of the following...Ch. 14 - If a bacterium cannot ferment glucose, why not...Ch. 14 - If a bacterium cannot use glucose, what result...Ch. 14 - If a bacterium cannot use citrate, what result...Ch. 14 - You put an opened bottle of orange drink in the...
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
- You are given a mixed culture of 3 bacteria with following characteristics- 1) Bacteria 1 - Methicillin- resistant Staphylococcus aureus (MRSA) (does not ferment any of these 4 sugars but forms endospores and is sensitive to penicillin) 2) Bacteria 2 - Escherichia coli (can ferment glucose, maltose, sucrose and lactose) and also produce carbon dioxide gas on fermenting these 3) Bacteria 3 - Enterobacter aerogenes. (can ferment only sucrose and cannot ferment glucose, maltose and lactose. Also on fermenting sucrose it produces hydrogen sulphide gas.) Also they all give similar looking white-colored colonies on an agar plate. Question: Generate separate pure cultures of these 3 bacteria from the mixed culture using the following tools that you learned in the lab. Use any (some or all) of these tools to generate pure cultures as well as confirm them. Any other technique that you use should be one you learned in lab. No need to give detailed info about how to perform the technique but it…arrow_forwardClostridium tetani is a common soil bacterium and causes tetanus. Would you expect C. tetani to possess the enzyme catalase? Explain.arrow_forwardwhat type of bacteria would be used to make sauerkraut?arrow_forward
- A bacterial organism is used to inoculate mannitol broth medium. Following incubation the broth is yellow. This indicates that the organism: A) can use lactose and glucose B) cannot use lactose C) can use mannitol D) cannot use mannitolarrow_forwardWhy are nitrates added to cured meats?arrow_forwardYour microorganism produce black color in peptone iron agar grown at 37 degrees Celcius overnight.Which enzyme would you predict the this microorganism has ? a)tryotophanase b)gelatinase c)desulfhydrase d)urease e)Cytochrome Carrow_forward
- Explain the changes that milk undergoes when suitable starter / inoculum is added to it . How does the end product formed prove to be beneficial for human health ?arrow_forwardDescribe the kind of food that would have lactic acid bacteria. Mention their useful applications.arrow_forwardWhich of the following factors does NOT help cells survive and grow well in an AEROBIC environment? a) Superoxide Dismutase b) Catalase c) Peroxidase d) Hydroxyl radicals e) Thioglycolatearrow_forward
- 11. Foods can be preserved in all the followings except: a) lyophilizing b) Drying c) Salting d) Fermentation 12. The temperature of the autoclave should be held for _____ minutes at least: a) 10 b) 15 c) 20 d) 30 13. The organism used to produce soft cheese is: a) Penicillium b) lactic acid producing bacteria c) ethanol producing bacteria d) a and carrow_forwardDoes Escherichia coli provide positive or negative results for the lysine decarboxylase and ornithine decarboxylase test results?arrow_forwardFlasks A and B contain broth, and are inoculated with an identical number of bacteria that are facultative anaerobes. Flask A contains a triglyceride lipid as the sole nutrient source, and Flask B contains a monosaccharide called fructose as the sole nutrient source. Both flasks are incubated at 30°C with aeration (oxygen is added to the broth). Assume the bacteria are capable of catabolism of both fructose and triglycerides. Mark all the correct statements pertaining to these cultures. A. Under anaerobic conditions, cells in flask A will produce more ATP B. Cells from flask B will produce more carbon dioxide C. Cells from flask B will produce more ATP D. Flask A will have the greater cell mass E. Cells from flask A will produce more ATP F. Cells from flask A will produce more carbon dioxide G. Flask B will have the greater cell mass H. Under anaerobic conditions, cells in flask B will produce more ATParrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biochemical Tests-Part 1; Author: Southern Stacker;https://www.youtube.com/watch?v=a-i9vANfQWQ;License: Standard Youtube License