Blog

In the formulation of Modified Thayer-Martin (MTM) selective agar, which antimicrobial agent is specifically included to inhibit Gram-positive normal flora?

This quiz is only to enable grade reporting

A vaginal culture plate yields small, translucent colonies displaying a narrow zone of beta-hemolysis on sheep blood agar (BAP). Gram stain reveals Gram-positive cocci in chains. A second plate (Human Blood Bilayer V-agar) inoculated with a vaginal swab from a different patient yields small colonies with diffuse beta-hemolysis, whose Gram stain shows Gram-variable coccobacilli. How do these bench findings differentiate Group B Strep from Gardnerella vaginalis?

When performing the Superoxol test (30% hydrogen peroxide; higher percent than regular catalase) on a suspicious Gram-negative diplococcus isolated from MTM agar, what reaction differentiates Neisseria gonorrhoeae from non-pathogenic Neisseria species and Moraxella catarrhalis?

List all unique genres in the database (A-Z).Results Grid Results Grid genre Action Adventure Animation Comedy Crime Drama Horror Mystery Romance Thriller

a) Explain how each factor in the Hagen–Poiseuille equation changes  blood flow. You may use any example you see fit for this explanation.  (5 points) b) In practice, can you use the The Hagen–Poiseuille equation to calculate actual blood flow in a human? (1 point).   Explain Why  ( 1 point). c) A person with high cholesterol has narrowing of the arteries. The homeostatic loop aims to keep the blood flow constant. How can this be achieved?  ( i.e.: Name 1 thing the body can do to quickly compensate )  ( 1 point). 

A pregnant patient at 36 weeks gestation undergoes GBS screening. The Lim broth enrichment culture yields beta-hemolytic colonies identified as Streptococcus agalactiae. The patient’s chart notes a history of severe penicillin anaphylaxis. Disk diffusion testing yields: Erythromycin = Resistant, Clindamycin = Susceptible. A D-test is performed and shows a flattened ‘D-shaped’ zone around clindamycin. How should the MLS report these susceptibility results?

A bench scientist evaluates a oxidase-positive, Gram-negative diplococcus isolated on MTM agar from an endocervical swab. CTA sugar reactions after 24 hours show: Glucose = Yellow (positive), Maltose = Yellow (positive), Lactose = Red (negative), Sucrose = Red (negative). How should the bench scientist evaluate this discrepancy?

Refer to the Teacher and Class tables. The TeacherID in the Class table references the TeacherID in the Teacher table. The TeacherID in the Class table is a/an (blank).  

What is the charge on the Mn in the ionic compound, Mn3N2?