Fermenting lactose Study guides, Class notes & Summaries

MMSC 438 EXAM 2 SET Q&A 1. A bloody stool sample is received in the laboratory and plated to routine stool culture media. The following results arerecorded by the laboratory scientist 24 hours after plating the patient sample:Blood agar: beta-hemolytic coloniesMacConkey: Only lactose fermenting colonies are presentSMAC: 2+ clear colonies presentFurther testing reveals: Oxidase negative, indole positive, MUG negative, motileThe most likely identification is: A. Yersinia enterocolitic...

True or False: Differential media is best suited for distinguishing between two similar species of bacteria. True Correct! Growth media does not contain restrictive factors, while selective media is best used to encourage the growth of one microbe while simultaneously discouraging the growth of the other. Since two similar species of microbes are being studied they must be differentiated under similar but just slightly different conditions (differential media). False Q 2 / 2 pts uestio...

M4: Module 4 Exam - Requires Respondus LockDown Browser + Webcam Attempt Time Score LATEST Attempt 1 28 minutes 98 out of 100 Score for this quiz: 98 out of 100 Submitted Aug 6 at 10:30am This attempt took 28 minutes. Question 1 2 / 2 pts True or False: Growth media is best suited for distinguishing between two similar species of bacteria. True Correct! False Growth media is designed to simply support (and not restrict) microbial growth. Question 2 2 / 2 pts A researcher is aske...

TSI correct answer: Triple Sugar Iron Yellow= acid production or fermentation of the sugars in the slant or butt. Gas production= indicated by the agar lifting up or breaking Red= negative or uninoculated Black= H2S production due to FeS precipitation (think salmonella or proteus) The source of Sulfur for H2S production by bacteria is the amino acid Cysteine TSI additional correct answer: Triple Sugar-Iron agar slants. is a differential medium containing 3 sugars called glucose...

FeCl3 Used in a PAA agar to detect presence of phenylpyruvic acid positive green color. MAC agar What stain do you do on Day 1 of the unknown lab? You may Gram stain from your unknown broth to confirm if the bacteria are Gram-positive or Gram-negative. A throat culture performed by using a throat swab is used to detect which organism that causes strep throat? Group A Streptococcus Bacteria Which staphylococci is the most important bacteria in human disease? Staphylococcus Aureus W...

Portage Microbiology Exam 4 with Complete Solutions rated A+ True or False: Growth media is best suited for distinguishing between two similar species of bacteria - False. Growth media is designed to simply support (and not restrict) microbial growth A researcher is asked to determine which of two vials contains e coli and which contains salmonella. Knowing both gram-negative while only one of them is capable of fermenting lactose, which type of media would be best suited (multiple choice...

Triple Sugar Iron Test Exam 38 Questions with Verified Answers For what bacteria would you use the TSI test? - CORRECT ANSWER Gram negative bacilli such as enterobacteriaceae. How would you identify an acidic slant? - CORRECT ANSWER If the slant goes from red to yellow on the phenol red. Why is there more lactose and sucrose in TSI agar than glucose? - CORRECT ANSWER In order to distinguish bacteria that can only ferment glucose from bacteria that ferment lactose and sucrose. It will al...

True or False: Growth media is best suited for distinguishing between two similar species of bacteria - False. Growth media is designed to simply support (and not restrict) microbial growth A researcher is asked to determine which of two vials contains e coli and which contains salmonella. Knowing both gram-negative while only one of them is capable of fermenting lactose, which type of media would be best suited (multiple choice) - Differential media distinguishes between two, often relate...

USMLE Step 1: Microbiology EXAM QUESTIONS AND ANSWERS LATEST |AGRADE organisms known for causing endocarditis - ANSWER- S. aureus, Staph epididermis, viridans strep, VRE, Strep. bovis, HACEK organisms four drug regimen used to treat TB - ANSWER- isoniazid, ethambutol, rifampin, pyrazinamide used to treat Trichomonas or Gardnerella - ANSWER- metronidazole used to treat Plasmodium vivax or ovale - ANSWER- chloroquine + primaquine used to treat Pediculosis capitis or pubus - ANSWER- pe...

Exams 1. What are the two major types of nucleic acids and their roles? DNA- deoxyribonucleic acid RNA- Ribonucleic acid DNA- Cellular life has DNA and a role that DNA has is long-term s torage of information, it holds the characteristics of living organisms. RNA- Is the carrier of information in form of amino acid sequence. It converts the information in the DNA and synthesizes proteins True or False: Archaea is noted for its ability to survive under harsh conditions. True. Archaea can often be...