« previous next »

Author Question: After 24 hours incubation at 35C in CO2, the cystine trypticase agar tubes of an oxidase-positive, ... (Read 40 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
on: Jun 25, 2018
After 24 hours incubation at 35C in CO2, the cystine trypticase agar tubes of an oxidase-positive, gram-negative diplococcus provides the following reactions:
 
  Control tubeyellow
   Glucoseyellow
   Maltoseyellow
   Lactoseyellow
   Maltoseyellow
  These results
  A) indicate a nonpathogen.
  B) indicate a potential pathogen.
  C) are invalid.
  D) should be read again after an additional 24 hours incubation.

Question 2

The nitrate reductase test for preculture screening of urines has low sensitivity if
 
  A) the organism does not reduce nitrate.
  B) the specimen is collected by suprapubic aspiration.
  C) there are fewer than 105 organisms/mL.
  D) all of the above.
  E) A and B


Awesome

  • Sr. Member
  • ****
  • Posts: 280
Reply #1 on: Jun 25, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

(A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive (A) Scratch test; patient is exposed to allergens through a light scratch on the skin; (B) Positive
Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to Tubal ligation. To minimize the size of the incisions necessary, laparoscopic surgery may be used to
Continuous positive airway pressure (CPAP) device. The sleeping subject is receiving the benefits of Continuous positive airway pressure (CPAP) device. The sleeping subject is receiving the benefits of
The medical assistant spends many hours on the telephone assisting patients. The medical assistant spends many hours on the telephone assisting patients.
A positive feedback loop. A positive feedback loop.
Catecholamines and monoamine oxidase. Catecholamines and monoamine oxidase.
Video: Structures that affect circulation - arterioles and vasomotor responses

For a complete list of videos, visit our video library