Quiz 1 Spring '08 pg 2

Quiz 1 Spring '08 pg 2 - MIC 201 Lab Spring 2008 Quiz#1...

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Unformatted text preview: MIC 201 Lab Spring 2008 Quiz #1:! Question #5 What are the correct standard terms used to describe colony morphology Opacity, Surféce, Elevation, Shape, Margin, Odor, Color b. Tinhidity, Surface, Elevation, Roundness, Margin, Odor, Color c. Opacity, Smoothness, Depression, Shape, Mar ' , Odor, Pigmentation d. Tutfiflity, Surface, Elevation, Contours, Edge, Smell, Color e. Opacity, Fuzziuess, Elevation, Slope, Margin, Odor, Color Question #6 Which reagents does the Gram stain method use and are listed in the correct order? )é Crystal violet, H20, Ethanol, H20, Safrannin, Lugol’s Iodine 7b, Crystal violet, Ethanol, H20, Safrannin, H20, Lugol‘s Iodine 72; Crystal violet, H20, Safrannin, H20, Lugol’s Iodine, Ethanol 2% Crystal violet, H20, Ethanol, Lugol’s Iod‘ H20, Safiamn'n Crystal violet, H20, Lugol’s Iodine, H20, Ethanol, Safiannin Question #7 What is the basic difference between a grain + and a Gram — bacteria? 73,, Gram + : has 1 cell membrane, thick peptidoglycan layer turns pink under a gram stain Gram - : has 2 cell membranes, thin peptidoglycan layer turns purple under a gram stain )K Gram + : has 2 cell membranes, thin peptidoglycan layer turns pink under a gram stain Gram — : has 1 cell membranes, thick peptidoglycan layer turns purple under a gram stain ’59] Gram + : has 2 cell membranes, thin peptidoglycan layer turns purple under a gram stain Gram - : has 1 cell membranes, thick peptidoglycan layer turns pink under a grain stain Gram + : has 1 cell membrami, thick peptidoglycan layer turns purple under a gram stain Gram - : has 2 cell membranes, thin peptidoglycan layer turns pink under a gram stain >é Gram + : has 1 cell membrane, thick peptidoglycan layer turns pink under a gram stain Gram - : has 2 cell membranes, thin peptidoglycan layer turns blue under a gram stain Question #8 Why is aseptic technique critical to a microbiologist? a. It doesn’t matter which sample is analyzed, just so long as there are some results to report. b. You may be analyzing the wrong bacteria in the sample and reporting false data. c the samples are contaminated, the samples need to be retested, it is a lot of extra work 1E3 are micro-organisms everywhere, even if you do not see them, they can still contaminate your sample. a ‘ Q B ause it allows you to destroy and remove any unwanted contaminating bacteria before it affects your sample and test results. Page20f3 I: 3} if]? fl , {fix «*5;- :"x .é‘: I '5 KlaCroix ...
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