
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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1. TRUE or FALSE. An autoclave can be used to sterilize growth media?
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- What main advantage do microbial plastics have over syntheticplastics?arrow_forward1. In terms of counting cells, what does a plating method accomplish that an electronic cell counting method does not? 2. Why does turbidity lose reliability at high cell concentrations when the culture reaches the stationary phase? 3. Some hyperthermophiles can survive autoclaving temperatures. Are they a concern in health care?arrow_forwardWhich of the following best descrives UTI agar? Selective growth media; Differential Growth Media; Liquid growth media; all of the choicesarrow_forward
- What is the advantage of the plating method over an electronic cell counting method in counting cells? Why does turbidity lose reliability at high cell concentrations when the culture reaches the stationary phase?arrow_forward1. What is the purpose for using stains? What microbial characteristics can one ascertain from a simple stain? 2. Why is it necessary to make a heat-fix smear and what are the disadvantages of heat fixing? 3. what is the best age for your culture when performing a gram stain? Why? 4. Why is Gean staining considered a differential staining process? 5. What are some reasons a Gram positive cell might appear Gram negative?arrow_forwardwhich of the following is a limitation of the autoclave? a. long length of time required for steriliztion b. inability to use with heat sensitive materials c. inability to use with common lab equipment like glassware d. does not sterilize, only sanitized e. all of the above are limitation of the autoclavearrow_forward
- With liquid media such as broth, is it possible to determine if the culture is pure using the naked eye only? no yes sometimesarrow_forwardWhat is the main difference between plates before and after centrifugation? What may be the purpose of concentrating the media and perform a second plating?arrow_forwardWhich media would allow positive growth in selective and differential media Thank youarrow_forward
- 1. What is the purpose for using stains? What microbial characteristics can one ascertain from a simple stain? 2. Why is it necessary to make a heat-fix smear and what are the disadvantage of heat fixing?arrow_forwardWhat is the purpose of adding mineral oil to an O/F Media tube and why do we only put mineral oil in only one? Which sugars are typically tested in the phenol red broth? Can the phenol red test be also used to determine if a certain bacteria can metabolize various carbohydrates? Explain how conducting the MR/VP test too soon in a culture’s growth cycle can lead to false negatives? Generally, the color change we see in these tests is a result of what change in the media? Explain. What is the MR-VP results for coli and E. aerogenes?arrow_forward29. Identify a FALSE statement from the following, Group of answer choices bacterial growth is related to nutrient concentration and availability sulfur is essential in growth medium for some amino acid synthesis none of the above is an false statement nutrients uptake can be via active or passive process culture medium must be sterile before inoculation 30. Identify a CORRECT statement regarding penicillin allergy? Group of answer choices the hypersensitive reactions are mediated by IgE penicillin is degraded to penicilloyl and other breakdown products all of the statements are correct penicilloyl haptens trigger most allergic reactions anaphylactic shock is the immediate danger penicillin can provokearrow_forward
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