The term "turbidity" in microbiology refers to: a cloudy appearance in broth, meaning microorganisms did grow a cloudy appearance in broth, meaning microorganisms did not grow a clear appearance in broth, meaning microorganisms did not grow the clump of cells at the top of a broth a clear appearance in broth, meaning microroganisms did grow

The term "turbidity" in microbiology refers to: a cloudy appearance in broth, meaning microorganisms did grow a cloudy appearance in broth, meaning microorganisms did not grow a clear appearance in broth, meaning microorganisms did not grow the clump of cells at the top of a broth a clear appearance in broth, meaning microroganisms did grow

Comprehensive Medical Assisting: Administrative and Clinical Competencies (MindTap Course List)

6th Edition

ISBN:9781305964792

Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Publisher:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa

Chapter42: Basic Microbiology

Section: Chapter Questions

Problem 2CR

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In microbiology, the term growth in a culture usually refers to an increase in O 1) the number and size of microbial cells. O 2) the amount of ATP consumed. O 3) a microbe's size. O 4) the number of microbial cells. 5) the amount of ATP produced.
What is yeast? Why is it a widely used microbe in food industrial microbiology? What characteristics does it have that makes it a beneficial microbe for wine, bread, juices, and the like? Enumerate the processes it undergoes, products it produces, and interactions with other microbes it has. Provide an example of a food product that makes use of yeast, and how yeast is involved in that production process
Based off Pasteur’s sterility experiment, which of the following choices is least likely to result in microbial growth? Nutrient broth placed in flask, heated, swan neck removed Nutrient broth placed in flask, not heated, swan neck not removed Nutrient broth placed in flask, not heated, swan neck removed Nutrient broth placed in flask, heated, swan neck not removed
In a bacterial culture on an agar plate, what is a zone of inhibition? An area where the growth of bacteria is increased compared to the rest of the agar plate An area where the growth of bacteria is prevented or reduced compared to the rest of the agar plate An area where the growth of bacteria is not affected compared to the rest of the agar plate An area where the the agar becomes contaminated with mold
Bacteria can grow under a variety of conditions but also have growth preferences. Bacteria that prefer to grow under oxygen levels that are below that of atmospheric oxygen are called: Obligate aerobes Microaerophiles Anaerobes Facultative anaerobes Clear my selection
Bacteria are not used as probiotic agents. O True O False The growth of bacteria that form endospores can be controlled by boiling. O True False Submit Back
4. (a) Which of the following chemical reactions is an overall oxidation-reduction (redox) reaction that involves oxidation number changes in their reactions? A. NaOH + H₂O → Na¹ + H3O+ + OH B. HCl + H₂O → H3O+ + Cl- C. CO₂ + H₂O → H+ + CO3²- D. N₂ + 3H₂ → 2NH3
On which of the following types of media would you expect untransformed bacteria to grow on? LB agar LB agar with ampicillin Untransformed bacteria will not grow on any type of medium. Untransformed bacteria will grow on all three types of media. LB agar with ampicillin and arabinose
What is the word used to describe microbes which have simple enzyme systems and which require growth factors (e.g. vitamins, amino acids) to grow? Trouble Buffer Fastidious Easy
Which of the following apply to silver as a chemical inhibitor of microbial growth? Acts as a competitive inhibitor Mimics the natural substrate O Binds nonspecifically to many proteins Irreversibly binds to proteins through covalent bond Will only bind to the active site Disrupts tertiary and quaternary protein structure Can safely and effectively be used to inhibit biofilm Alters the shape of the active site
You are studying a bacterium which uses sunlight to produce its own organic compounds from carbon dioxide. Which of the following is the best way to describe the way that the bacterium acquires energy and organic compounds? chemolithotroph chemolithotroph O chemoorganoheterotroph O photoautotroph O photoheterotroph
After quick-characterization by staining, specialized growth media can be used to indicate further biochemical characteristics of an unknown organism. These tests use visual outcomes, such as colors, patterns, and changes in appearance. The results can be interpreted to then assign a characteristic to the unknown organism. For example, a color change may happen when an unknown organism is incubated in a mixed sugar broth. The color could indicate which sugar was (or was not) used by the bacterium for energy. a) explain in your own words how to perform specialized media tests to find an unknown bacteria