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- 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) distille1. 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) distilled1. The technique used in bacteria for endospore staining can also be used to observe fungal spores. Select one: True False 2. Which of the following statements is/are TRUE? a. Agar does not provide nutrients to microorganisms. b. Peptone, pork extracts, and yeast extracts provide nutrients to microbes. c. Tap water must be used for preparing culture media. d. A & B are correct. e. B & C are correct Clear my choice 3. Motility of microorganisms is BEST observed with a a. Flagellar stain b. Hanging drop preparation c. Solid medium d. Negative stain e. Streak plate Clear my choice
- How do you observe growth in liquid microbiological media? a) the medium is cloudy or turbid b) colonies appear on the surface of the medium c) the medium becomes solid d) colonies appear distributes throughout the medium1 The following bacteria are gram positive bacilli EXCEPT : A. Corynebacterium sp. B. Citrobacter C. Listeria sp. D. Lactobacillus sp. E. Clostridium sp.A microbicidal agent has what effect?a. sterilizesb. inhibits microorganismsc. is toxic to human cellsd. destroys microorganisms
- 2) 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.Which of the following is the most resistant to destruction bychemicals and heat?a) Bacterial endosporesb) Fungal sporesc) Mycobacterium tuberculosisd) E. colie) HIV1. While playing saxophone . Sometimes the reed can get bacteria or fungus growing on it. What method would you choose to disinfect it ? Give your reasoning for your answer . ( The reed can be removed from the saxophone . It is very delicate and made of bamboo.)
- A. iMAGE 1 1. What is a special characteristic of the microorganism shown? CHOICES: A.It shows colonies in clusters. ,B.It's movement is aided by its, C.monotrichous flagella., D.It's cells occur in pairs., E.It contains a waxy lipid on its walls., F.It has an endoflagella. ,GIt contains an endospore., H.It shows colonies in chains. I.It's movement is aided by its peritrichous flagella. J. It is eukaryotic. 2. What staining method is done? CHOICES: A. Ziehl-Neelsen Stain, B. Schaeffer C. Fulton Stain, D. Flagella Stain, E. Gram Stain, F. KOH MounT 3.How do you describe the shape of the microorganism ? CHOICES:A. Filamentous B. Cocci ,C. possible ,D. Spirochete, E. Bacilli ,F. Pleomorphic 4. How do you describe the shape of the microorganism? CHOICES:A. Staphylococcus aureus ,B. Vibrio cholerae, C. Leptospira interrogans, D. Escherichia coli ,E. Malassezia furfur ,F. Neisseria gonorrhoeae ,G. Streptococcus pyogenes , H. Bacillus anthracis, I. Mycobacterium tuberculosis 5. What could…) Most human bacterial pathogens are labeled as __ according to their temperature requirement: a) Aerophiles b) Aerobes c) Anaerobes d) Psychrophiles e) Mesophiles3. Why can there be no generalized media that can support all types of microorganisms? Briefly justify in less than 50 words.
