MICRO1 Introduction to Diagnostic Microbiology for the Laboratory Sciences

Practice flashcards based on key concepts from the lecture on diagnostic microbiology.

What are the basic concepts for proper specimen collection in diagnostic microbiology?

Proper specimen collection involves understanding appropriate collection techniques, identifying unsuitable samples, and corrective actions.

What specific collection requirements are needed for a nasopharyngeal specimen?

A nasopharyngeal specimen requires a swab that is inserted into the nasopharynx to obtain secretions.

What are the different types of urine specimens in microbiology?

Clean catch, catheterized, and suprapubic specimens.

What is the significance of proper specimen transport and processing methods?

Proper transport and processing methods ensure the integrity of the specimen and accurate test results.

What is Bartlett's classification used for?

Bartlett's classification is used to determine whether a sputum sample is acceptable or contaminated.

What is the purpose of sheep blood agar?

Sheep blood agar is used to support the growth of a variety of microorganisms and to observe hemolysis.

What types of hemolysis can be observed on sheep blood agar?

Alpha-hemolysis, beta-hemolysis, and gamma-hemolysis.

How would you differentiate between an aerobe and an anaerobe?

Aerobes require oxygen for growth, while anaerobes grow in the absence of oxygen.

What is a facultative anaerobe?

A facultative anaerobe can grow in both the presence and absence of oxygen.

What are the main components of MacConkey agar?

MacConkey agar contains bile salts, crystal violet, and lactose for the selective growth and differentiation of gram-negative bacteria.