III. Microbes that can survive and thrive in extreme environments are known as extremophiles. In this context, what is the most accurate term that can be used to describe microbes that are used in vinegar (pH 2-3) production? A. B. C. D. Halophiles Acidophiles Thermophiles Psychrophiles
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- The majority of heterotrophic bacteria are (a) free-living chemoheterotrophs (b) photoautotrophs (c) chemo-autotrophs (d) facultative anaerobes (e) obligate anaerobes1.) During a laboratory activity, Chemical reactions from mixture of chemicals should be observed under which laboratory equipment? a.) autoclave b.) fume hood c.) Labaratory Safety cabinet d.) Centrifuge 2.) Which type of equipment contains a HEPA filter that only removes suspended materials from exhausted air? a.) Fume hood b.) Biosafety Cabinet I c.) Biosafety Cabinet II d.) Biosafety Cabinet III1. Define the following terms: a. Chermolithoheterotroph b. Microaerophile c. Chermoorganoheterotroph d. Obligate anaerobe e. Facultative anaerobic f. Coliform
- 1(a)What is a psychrotroph? (b)From what natural sources would you isolate a thermophile? A psychrophile? (C)How does temperature affect the growth of a microorganism? (D)State the temperature class for Escherichia coli, Bacillus sp, Aeromonas sp, Micrococcus luteus, and suggest their optimum growth temperature. 2 (a)Why is dilution important when determining microbe number? (B)How does a decrease in dye colour intensity affect the microbe ? (C)State the possible sources of error if plate counts and colour intensity of dilutions are incorrect or Precautions taken to prevent this from happening. ( this is not a graded assignment)A microbe causing a bloodstream infection is likely all of the following except A. A chemotroph B. A parasite C. A heterotroph D. A thermophileA type of bacteria that can only grow in a medium with no oxygen would be referred to as a(n) _______. Question 10 options: A) obligate aerobe B) obligate anaerobe C) microaerophile D) facultative anaerobe
- Requires oxygen at a lower concentration than typically found in air. Question 3 options: a) Obligate aerobe b) Facultative anaerobe c) microaerophile d) None of the above8. A retort pouch is: a) Filled first with food product and then retorted (heat-sterilization) to extend product shelf life. b) Food is heat-sterilized first, and then added to a pouch under nitrogen c) Retort pouches requires thermally stable seals d) Both a and cExtreme thermophiles (hyperthermophiles) are active a. in temperate zone soils on hot, sunny days. b. in recently fallen meteorites that are still too hot to handle with bare hands. c. in very hot geothermal environments. d. in steel mills. Enrichment of a fast growing bacterial species from a sample in which it is not abundant may employ: a. Serial dilution using sterile physiological saline or other common diluent. b. Inoculation and incubation through multiple transfers to fresh media. c. Preincubation in the refrigerator. d. Use of beer as a medium supplement. Which of the following sequences of electron carriers could represent a workable bacterial electron transport chain? a. cytochromes, followed by an iron-sulfur protein, and quinones. b. quinones, cytochromes, iron-sulfur proteins, and a flavoprotein. c. a flavoprotein, followed by an iron-sulfur protein, quinones, and cytochromes.…
- Can you give me an example of a specific medium in culture media and fill the information below. General Information Specific a. Name of medium: b. Physical form: c. Category based on formulation: d. Purpose/uses/function: e. List of Ingredients and concentration (per 1000 ml) f. How to prepare?1. Why is it the Fluidized Bed Bioreactor is important in the biological wastewater treatment compare to other bioreactors?Explain the reasons why the Poon Choi is the high risk food for the elderly? It would be easily spoiled if you found the condensed water on the inner side of the cover lid of the container, and also if you put it at room temperature for more than two hours. Explain in term of the factors of microbes growth. Explain it in detailed.