Microbiology: An Introduction
12th Edition
ISBN: 9780321929150
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: PEARSON
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Chapter 10, Problem 5R
NAME IT Use the key in the Applications of
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Describe characteristics of Streptococcus Agalactiae in the Agar: (How does colonies look like (color) and explain does it grow on that agar.
Blood Agar (Aerobic)
MacConkey
EMB
PEA
Mannitol Salt Agar
Chocolate Agar
Nutient Agar
MacConkey agar is often used to differentiate E. coli from other Gram-negative rods. The recipe for MacConkey agar is given in the table. Suppose you plated a mixed culture of Escherichia coli, Bacillus subtilis, and Streptococcus pyogenes onto a MacConkey agar plate. Which species would grow, and how would they appear? Why would the others NOT grow?
Describe characteristics of Streptococcus Agalactiae in the Agar: (How does colonies look like (color) and explain does it grow on that agar. (Don't have to write the incubation period) ~ Only describe how would it look like on the Agar:
Blood Agar (Aerobic)
MacConkey
EMB
PEA
Mannitol Salt Agar
Chocolate Agar
Nutrient Agar
Chapter 10 Solutions
Microbiology: An Introduction
Ch. 10 - Which of the following organisms are most closely...Ch. 10 - Here is some additional information on the...Ch. 10 - DRAW IT Use the additional information below to...Ch. 10 - DRAW IT Use the information in the table below to...Ch. 10 - NAME IT Use the key in the Applications of...Ch. 10 - Sergeys Manual of Systematic Bactenoiogy differs...Ch. 10 - Bacillus and Lactobacillus are not in the same...Ch. 10 - Prob. 3MCQCh. 10 - Which of the following is false about scientific...Ch. 10 - You could identify an unknown bacterium by all of...
Ch. 10 - The wall-less mycoplasmas are considered to be...Ch. 10 - Use the following choices to answer questions 7...Ch. 10 - Prob. 8MCQCh. 10 - Prob. 9MCQCh. 10 - Use the following choices to answer questions 9...Ch. 10 - The GC content of Micrococcus is 66-75 moles %,...Ch. 10 - Describe the use of a DNA probe and PCR for: a....Ch. 10 - SF medium is a selective medium, developed in the...Ch. 10 - Prob. 1CAECh. 10 - Prob. 2CAECh. 10 - Prob. 3CAE
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- What are the shape, arrangement and gram staining use of the following? Staphylococcus aureus Bacillus subtilis Escherichia coli Pseudomonas aeruginosa Proteus vulgaris Vibrio cholerae Salmonella entericaarrow_forwardWhat specifically causes colonies of lactose fermenters to be pink-red on MacConkey agar?arrow_forwardCharacterize the following bacteria: Gram reaction: Shape: Arrangement: Special structure/s if any: 1 common disease caused: Borellia burgdorferi Gram reaction: Shape: Arrangement: Special structure/s if any: 1 common disease caused: Spirillum volutansarrow_forward
- You are working in a lab studying Streptococcus pyogenes as a cause of necrotizing fasciitiis. You have an overnight culture that you want to know the starting concentration of, so do a set of six 1:10 serial dilutions (putting 1 mL from the stock into a 9 mL blank), with tube #1 being 1:10, #2 is 1:100, etc. You plate 0.1 mL from tube 5 onto a blood agar plate and the next morning count 134 colonies. How many bacteria (measured in CFU/mL) were in the overnight culture flask? A. 1.34 x 10^4 CFU/mL B. 1.34 x 10^5 CFU/mL C. 1.34 x 10^6 CFU/mL D. 1.34 x 10^7 CFU/mL E. 1.34 x 10^8 CFU/mL F. cannot tell based on the data given - you'd need to know the volume of the original culture flaskarrow_forwardWhy do Salmonella growing on XLT-4 agar is red colony with black center. Explain it in detail and concisely.arrow_forwardAbout becterial enzymes, it is CORRECT to affirm that: a). Some becterial enzymes can help the microbe fight the immune system, by destroying lgA.b). Coagulases are enzymes that use the host's fibrinogen and form a semi-solid get that isolates amd protects the bacteria.c). Some bacterial enzymes such as hyaluronidase can help the microble move through the host's tissus by destroying the tissue's components.d). Fibrolysin is an enzymes that can help from blood clots.arrow_forward
- How can you tell that these S. aureus isolates are different strains?arrow_forwardBelow are morphological, physiological and biochemical characteristics of an unknown luminous bacterium isolated from the gills of a marine fish. Use the data below to identify the isolate. Make an identification scheme Test Unknown Isolate B 1 Luminescence Positive 2 Cell Shape Straight Rods 3 Gram Staining Negative 4 Oxygen Requirement Facultative Anaerobe 5 Motility (Hanging Drop) Motile 6 Growth at 0% NaCl Negative 7 3% NaCl Positive 8 6 % NaCl Positive 9 Accumulation of PHB Positive 10 Flagella 1 Polar 11 Oxidase Positive 12 Nitrate Reduction 13 Gelatinase Negative 14 Growth at 35OC Positive 15 Growth at 4OC Negative 16 Methyl Red Positive 17 Voges-Proskauer Positive 18 Catalase Positive 19 Starch Hydrolysis Negative 20 Lysine…arrow_forwardThis is a catalase-positive, coagulase-negative, gram-positive coccus isolated from a urine specimen from a 20-year-old female college student. The image shown is a Mueller Hinton plate streaked with a 0.5 MacFarland standardized inoculum and a 5 microgram disk of novobiocin after overnight incubation. What is the identification of the isolate? Please select the single best answer Staphylococcus epidermidis Staphylococcus aureus Staphylococcus saprophyticus Staphylococcus lugdenensisarrow_forward
- Based on the table is the bacteria Staphylococci harmful to humans?arrow_forwardUse the attached image to help explain the results on the NA and ECM plates. Be sure to address why each sample is either able or unable to grow on each plate and include the genotype(s) of the cells which are capable of growth.arrow_forwardVibrio cholerae can be cultured on Thiosulfate-Citrate-Bile salts-Sucrose agar (TCBS). Enterobacteriaceae and gram-positive bacteria are inhibited on this agar. cholerae produces large yellow colonies while other Vibrio species produce blue, green, or blue-green colonies. Discuss the purpose of each media listed. Based on this information alone, what term(s) would best describe this agar? Selective Enrichment (enriched) Differential Reducing Selective and enriched Selective and differential Selective, differential, and enrichedarrow_forward
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