Microbiology: Principles and Explorations
9th Edition
ISBN: 9781118743164
Author: Jacquelyn G. Black, Laura J. Black
Publisher: WILEY
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Chapter 1, Problem 16SQ
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To explain: The Koch postulates in the correct order.
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A suspected pathogen is observed from the blood of a diseased mouse. An
investigation of the other mice in the area indicates that it is not present in healthy
mice. With Koch's postulates in mind, what is the next step to determine whether or
not this suspected pathogen is the cause of disease in the mouse?
a) Grow the suspected pathogen in a pure culture
Ob) Re-isolate the suspected pathogen and show that it is the same as the
original pathogen
c) Inoculate a healthy mouse with the suspected pathogen
O d) Determine whether the organism in the pure culture is the same one as in
the original sample
5) A pure culture A) is sterile . B) is a population of identical cells. C) is made of a clearly defined chemical medium. D) contains one microbial cell.
The Petri Dish method is used in microbiology to raise bacteria in: a) rapid growth b) pure culture c) septic environment d) all of the above 2. What is the difference between antiseptic and sanitization?3. In order to prevent any kind of contamination the medium must be _________ before placing it in the Petri dish. a) lyophilized b) pasteurized c) autoclaved d) distille
Chapter 1 Solutions
Microbiology: Principles and Explorations
Ch. 1 - List three reasons to study microbiology.Ch. 1 - What is the difference between microbiology and...Ch. 1 - Prob. 1.3SCCh. 1 - List five bacterial diseases and five viral...Ch. 1 - Prob. 2.1SCCh. 1 - State the germ theory of disease. Try to think of...Ch. 1 - How did Pasteurs experiment with swan-necked...Ch. 1 - Why was the French microbiologists method of broth...Ch. 1 - What were the scientific contributions of Jenner,...Ch. 1 - Prob. 3.2SC
Ch. 1 - What is the Human Genome Project? How has...Ch. 1 - Prob. 1CCSCh. 1 - Prob. 1CTQCh. 1 - Can you think of some reasons why it might be hard...Ch. 1 - As often happens in science, one observation or...Ch. 1 - It is likely that others beside Anton van...Ch. 1 - The completion of chromosomal mapping and...Ch. 1 - Prob. 6CTQCh. 1 - Prob. 1SQCh. 1 - Conclusive evidence of thriving microbial life has...Ch. 1 - Which of the following is not true? (a) A single...Ch. 1 - Which is false regarding Archaea? (a) They lack a...Ch. 1 - Why are microbes important to study and how are...Ch. 1 - Prob. 6SQCh. 1 - Prob. 7SQCh. 1 - Animals such as worms and ticks are too large to...Ch. 1 - Prob. 9SQCh. 1 - Prob. 10SQCh. 1 - What triggered the development and establishment...Ch. 1 - Prob. 12SQCh. 1 - Prob. 13SQCh. 1 - The biggest obstacle in the acceptance and...Ch. 1 - Match the following terms to the appropriate...Ch. 1 - Prob. 16SQCh. 1 - Prob. 17SQCh. 1 - Prob. 18SQCh. 1 - Describe the contributions of the following...Ch. 1 - Prob. 20SQCh. 1 - Prob. 21SQCh. 1 - Prob. 22SQ
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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
- 1. The Petri Dish method is used in microbiology to raise bacteria in: a) rapid growth b) pure culture c) septic environment d) all of the above 2. What is the difference between antiseptic and sanitization? 3. In order to prevent any kind of contamination the medium must be _________ before placing it in the Petri dish. a) lyophilized b) pasteurized c) autoclaved d) distilledarrow_forwardthe following are the steps, listed in random order, for utilizing koch's postulates. what should be the second step out of the four listed? a. a microorganism is found to be present in every case of a disease. b. the same microbe discovered previously is isolated from the purposely infected host c. the pathogen is isolated and grown in pure culture d. the same disease results after isolated organism is inoculated into healthy hostarrow_forwardKoch's postulates include all of the following EXCEPT O 1) Isolate the organism in pure culture. The symptoms of the test animal may vary from the symptoms seen in the O 2) patient. O 3) Inoculate a test animal with the isolated organism. 4) The organism must be isolated from the test animal in pure culture. 5) The organism isolated from the test animal must match the organism isolated from the patient.arrow_forward
- Choose one infectious disease from the list below and use the chain of infection to analyze how it is spread. A. Please provide a comprehensive description of cholera. B. Describe the chain of infection cholera. The chain of infection for the chosen infectious disease must clearly include the following: 1. Identification of a) the pathogen, b) the reservoir c) means of transmission d) the susceptible host 2. Describe how one could break the chain of cholera, such as breaking the pathogen link, by providing a specific intervention. 3. Include references and relevant data.arrow_forward7) Identify the most correct choice: a) The time required for a bacterial population to double is called generation time Ob) Nitrogen is required by the organisms mainly to produce ATP. c) Agar is a common food source for the bacteria. d) A colony is usually a mixture of various bacterial organisms. e) a and carrow_forwardWhen hydrogen peroxide is placed on a colony of an unknown bacterium, bubbles form. Based on this information, you can conclude that the bacteriuma) is Staphylococcus epidermidis.b) is a lactic acid bacterium.c) is beta-hemolytic.d) is catalase-positive.e) can cause strep throat.arrow_forward
- The use of sterile techniques and agar media enables microbiologists to study: a) Bacterial growth b) Nutrient agar-metabolizing culture c) Bacterial metabolism d) Pure cultures d) Bacterial life cyclarrow_forward29) When speaking about an antibiotic's SPECTRUM, to what are healthcare providers referring? A) The amount of light exposure that will cause chemical break down of the antibiotic. B) The color of the antibiotic tablet. C) The quantity of organisms the antibiotic is effective against. D) The speed at which the antibiotic will treat the infection.arrow_forward44. The use of chemical agents to kill or inhibit the growth of microorganisms within their host’s tissue is called: a) antiseptic b) sanitization c) disinfection d) chemotherapeutic e) sterilizationarrow_forward
- Is the Triple-Sugar Iron Agar (TSIA) a complex or defined medium? Explain based on its composition. Is the test tube a A) broth, B) slant, or C) deep agar medium? Why is a “needle” used to inoculate?arrow_forward-For each item listed below, select a sterilant that you feel is the most suitable and effective for that item. Discuss why you selected each sterilant.? A) plastic Petri dishes to be used for nutrient media B) glass tubes of bacterial cultures to be discarded C) sterile milk D) dozens of reusable glass pipets E) bone tissue for grafting F) room air G) hospital mattresses H) biopsy tissue for histology analysis I) plastic respiratory therapy equipment and arthroscopes J) vaccinesarrow_forward8. The time of the incubation for the serial dilution experiment should be ___ hrs.: a) 12 b) 24 c) 48 d) one week 9. The autoclave temperature must be at least ___ : a) 100 oC b) 100 oF c) 121.6 oC d) 121.6 oF 10. The use of the autoclave ensures: a) the death of all bacteria b) the death of all bacterial spores c) all of the above d) none of the above.arrow_forward
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