On xylose-lysine-desoxycholate (XLD) agar, Salmonella typhi appears as :   Red colonies with black centers Yellow colonies with black centers Green colonies with black centers Blue colonies with red centers

Meningitis due to Haemophilus influenzae occurs most frequently in:   Adolescents  young women middle-age men  infants under 2 months

A TSI tube showing an alkaline slant and acid deep signifies that the organism:   ferments lactose only ferments sucrose only ferments glucose only ferments lactose, sucrose, and glucose

A Gram stain of a urethral smear from a man revealed gram-negative diplococci within polymorphonuclear leukocytes. The organisms are probably:   Streptococcus pneumoniae Neisseria gonorrhoeae Neisseria meningitidis Calymmatobacterium granulomatis

  Quality control of bacteriologic media includes all of the following except:   recording the temperature of the room when made checking for sterility checking each batch for its ability to support growth determining that each batch gives the appropriate selective or inhibitory characteristics

Opinion question: On a scale from 1 – 4 with 1 being not confident at all to 4 being extremely confident, how do you feel about your answers on this quiz?

Interpretation of equations and numerical answers is another fundamentally important concept in this course.   In the hypothetical equation:  ,  Hint:  Assume quantity a remains unchanged in this exercise. In answering these types of questions, you can always try plugging in simple numbers. If you want a calculator to aid in answering any of these questions, click the calculator icon on the far right of this question.

The scolex of Taenia saginata has: 4 suckers no suckers and 14 hooklets 24 hooklets 26 to 28 sucking disks

  The best medium for culture of Mycobacterium tuberculosis Bordet-Gengou                 3  Lowenstein-Jensen’s Loeffler’s                          4  cystine blood agar

A positive niacin test is most characteristic of Mycobacterium