Biology and Microbiology Quiz Questions

What is the limitation of determining antibodies against Salmonella typhi antigens in blood serum?

It is not of diagnostic value

Which of the following is NOT a pathogenicity factor of Neisseria gonorrhoeae?

Spores

What method is used for microbiological diagnosis of leptospirosis?

Microscopy of rash elements stained by the Giemza method

What is the characteristic of antibodies against D-antigen?

They are formed during the convalescence period Signup and view all the answers

What is the characteristic of antibodies against H-antigen?

They are formed during the convalescence period Signup and view all the answers

What type of colonies does a particular bacterium form on a solid nutrient medium?

Creeping colonies covering the entire surface Signup and view all the answers

Which of the following diseases is NOT caused by mycoplasmas?

Infectious mononucleosis Signup and view all the answers

What is the causative agent of ornithosis?

Chlamydia psittaci Signup and view all the answers

Which of the following microorganisms can grow at 42°C?

Campylobacter jejuni Signup and view all the answers

What is the primary method of diagnosis for Escherichia?

Bacteriological method Signup and view all the answers

Which reaction is NOT used in the diagnosis of actinomycosis?

Serological method Signup and view all the answers

What is a pathogenicity factor of Clostridium botulinum?

capsule Signup and view all the answers

Which reaction is used in the diagnosis of legionellosis?

polymerase chain reaction Signup and view all the answers

What method is used in the diagnosis of tularemia?

microscopic and serological method Signup and view all the answers

What is the characteristic of the bacterium obtained from the cerebrospinal fluid of a newborn child with meningeal symptoms?

Gram-positive, motile, and non-spore-forming Signup and view all the answers

What toxin causes diarrhea by activating adenylate cyclase in the intestinal epithelium?

cholerogenic exotoxin Signup and view all the answers

Which diagnostic technique is used for legionellosis?

Polymerase chain reaction Signup and view all the answers

What method is used in the diagnosis of ornithosis?

determination of antibodies in blood serum Signup and view all the answers

What is the characteristic of Yersinia pestis colonies in solid food environments?

Lion's mane-like colonies Signup and view all the answers

What reaction is used in the serological diagnosis of tularemia?

agglutination reaction Signup and view all the answers

Which microorganism is characterized by 8-12 equal folds and is motile?

Campylobacter Signup and view all the answers

What type of cells are characteristic of bacterial vaginosis?

Epithelial cells with coccobacilli Signup and view all the answers

What is the probable cause of meningeal symptoms in a newborn child?

Listeria monocytogenes Signup and view all the answers

What is the probable cause of a gram-negative, motile, rod-shaped bacterium that forms colorless colonies on Endo medium detected from the blood of a febrile patient?

Escherichia coli Signup and view all the answers

Biology and Microbiology Quiz Questions

Questions and Answers