Micro Final

Which of the following statements concerning beta lactamase is false:

The ratio of the amount of antimicrobial that is toxic to the amount, which is effective, is known as:

The enzyme that breaks penicillin into penicilloic acid is:

Antibiotics that act by inhibiting synthesis of the bacterial cell wall include:

A positive beta-lactamase test indicates:

A procedure, which directly determines beta-lactamase production by a microorganism, is based on the detection of:

The initial site of infection with Cryptococcus neoformans is:

Which of the following organisms is identified by its ability to produce germ tubes in plasma at 37 degrees C in 2 hours:

A yeast with a capsule seen on an India Ink prep of spinal fluid may be:

Candida albicans is part of the normal flora of which of the following sites?

Which of the following are useful in identifying Candida albicans?

The most common cause of bacterial meningitis in children 1-4 is:

Haemophilus influenzae will grow on:

X factor corresponds to which growth factor

Haemophilus aegyptius differs most strikingly from Hemophilus influenzae in:

Hemophilus influenzae:

The satellite phenomenon is associated with:

The most important cause of meningitis and epiglottis in children, some strains having become resistant to the drug of choice (ampicillin) by means of beta-lactamase enzyme is:

You have isolated a gram-negative coccobacillus from an eye culture from a case of conjunctivitis. The organism grows well on chocolate agar but not on blood agar, and further testing show it requires both the X and V factors for growth. The organism is most likely:

The porphyrin test is used to identify an organism's requirement for:

The routine medium used for isolation of Hemophilus species is:

The role of normal skin flora is to:

The collection of organisms referred to as "diptheroids" are:

Which of the following organisms causes furuncles and carbuncles?

Furuncles and carbuncles are abscesses usually caused by:

A specimen from a wound is sent to the laboratory for routine culture. Select the most appropriate method for processing of this specimen.

A satellite test is performed to speciate Hemophilus spp, using BAP. After 24 hours the organism is seen growing around Staph on both BAP. This means the organism requires:

Hemophilus aegyptius is primarily a pathogen of the:

Hemophilus influenzae is most commonly encountered as a pathogen in:

The satellite phenomenon works on the following principles:

Hemophilus parainfluenzae requires which growth factors:

Normal flora of the skin consists of:

Skin:

The minimal identification information needed to identify a yeast isolate as Candida albicans would be:

A presumptive identification of Cryptococcus neoformans depends on which of the following results?

The gram stain morphology of the genus Hemophilus is best described as:

Impetigo is most often caused by:

Bordet-Gengou media is used for the laboratory diagnosis of:

The specimen of choice to collect for Bordetella pertussis is:

Pertussis continues to be a problem of worldwide importance. Children under the age of 2 primarily acquire the disease by:

An organism that is a gram-negative coccobacillus, grows on Bordet Gengou agar with mercury drop colony appearance and biochemically inert is:

A positive cytochrome oxidase test is used to identify:

Select the best response from the chart given: Glucose - Maltose - Sucrose - Lactose -

Select the best response from the chart given: Glucose + Maltose + Sucrose - Lactose -

Both Neisseria meningitidis and Neisseria gonorrhoeae are positive for glucose, but only Neisseria meningitis is positive for:

The non-pathogenic Neisseria and Moraxella species have all of the following in common except:

Neisseria species may be identified by which of the following sugars?

The Elek toxigenicity test detects the presence of:

Establishing the pathogenicity of a microorganism isolated from a child's throat as Corynebacterium diptheriae would depend on:

The ELEK plate is the in-vitro toxigenicity test for:

A direct smear from a nasopharyngeal swab stained with Loeffler's methylene blue stain showed various club shaped rods with deep blue metachromatic granules. The likely identification is:

Transmission of M. tb is by:

Mycobacterium tuberculosis has:

In a normal person, the natural host defenses may ward of M. tb in the lung forming:

The Ziehl-Neelson or Kinyouns stain is used for:

A 51-year-old male was admitted to the hospital for a cardiovascular accident. An aspirated sputum is sent for acid fast studies after several sputa have been negative. The fluorochrome stain shows four acid-fast bacilli, which give a good fluorescence, and is reported to the doctor in charge of TB control. The doctor reports that it does not fit the clinical picture, as the skin test was negative and x-ray normal. A second aspirated sputum was sent. Two fluorescent bacilli are observed. Control slides were used in each situation. With these facts, the most likely conclusion is:

The causative organism of tuberculosis is:

The small gram-negative rod that causes whooping cough is:

Specimens must be processed immediately for the isolation of the pathogenic Neisseria species because these organisms are:

Loeffler's and Cystein-tellurite media are used to isolate the organisms in suspected causes of:

The most characteristic morphological forms of C. diptheriae are found in smears from a 18-24 hours culture on the following medium:

Multi-drug resistant tuberculosis results from:

The best time to collect a sputum specimen for AFB culture is:

A medium designed for the isolation of Bordetella pertussis is:

Select the best response from the chart given: Glucose + Maltose + Sucrose - Lactose +

Which of the following rapid sugars are fermented by the organism Neisseria meningitidis?

The disease Diptheria is caused by the organism's ability to produce:

The toxicity of a strain of Corynebacterium diptheriae is demonstrated by:

A gram-positive club shaped bacillus occurring in Chinese letter arrangement is probably a member of the genus:

The appearance of bright yellow-orange, fluorescent acid-fast bacilli against a dark background is observed after using which of the following stains for Mycobacteria:

The large lipid content in the cell wall of mycobacterium species is responsible for their:

A change in colony color upon addition of oxidase reagent is used to identify:

When a physician orders susceptibility testing on Neisseria meningitidis, what is the fastest method to provide information?

A direct smear from a nasopharngeal swab stained with Loeffler's methylene blue stain showed various club shaped rods with deep blue metachromatic granules. The most likely identification is:

The differentiation between the Neisseria species is made by

The Elek plate is the in vitro toxigenicity test for:

All species of Neisseria produce the following enzyme

Loeffler's and Cystine-tellurite media are used to isolate the organisms in suspected causes of

The enzyme that breaks penicillin into penicilloic acid is`

Staph aureus is generally resistant to Penicillin G by what mechanism?

A positive Beta lactamase test indicates

Staphylococcus aureus would most likely be resistant to:

A procedure, which directly determines beta-lactamase production by an microorganism, is based on the detection of

the test we use to identify candida albicans

moraxella oxidase result

Acceptable sputum smear

rejected sputum smear

what does beta lactamase tell us

H. influenzae

H. parainfluenzae

Which of the following may be implicated in Neisseria gonorrhoeae infections:

In females, the best site to culture for suspected gonorrhea is the:

Select the best response from the chart given: glucose +, maltose -, sucrose -, lactose -

The alphabetical symbol used to denote the somatic antigen is the letter:

The genus of the family Enterobacteriaceae with which the "swarming" phenomenon is associated is:

The medium, which is MOST inhibitory to gram-positive organisms and normal enteric flora, is:

Reactions on a TSI slant were: K/A with gas and H2S. These reactions could be produced by:

A positive urea slant would be typical of which of the following:

All species of the genus Shigella are characteristically

Which of the following tests may differentiate Proteus from Providencia and Morganella