Microbio Flashcards
What is mannitol salt agar used to grow?
A. Streptococcus
B. Staphylococcus
C. E. Coli
B. Staphylococcus
Deoxyribonuclease in a medium inhibits ____?
A. Transcription
B. Translation
C. Transformation
C. Transformation
Which of the following are negri bodies seen in? A. Alzheimers B. Rabies C. Measles D. Mumps
B. Rabies
Which of the following is an advantage of passive immunity?
A. Rapid availability of protection
Which of the following release IL-2? A. B-lymphocytes B. T-lymphocytes C. Monocytes D. Plasma cells
B. T-lymphocytes
Which of the following is caused by a virus?
A. Measles
B. Toxoplasmosis
C. Lyme disease
A. Measles
Which of the following describes destruction of all microorganisms?
A. Sanitization
B. Sterilization
C. Autoclaving
B. Sterilization
Fever blisters are associated with which of the following?
A. Herpes simplex type I
B. Herpes simplex type II
C. Gonorrhea
A. Herpes simplex type I
Which of the following is an acid fast bacterium?
A. Staphylococcus
B. Streptococcus
C. Mycobacterium
C. Mycobacterium
A medium on which colonies of lactose fermenting bacteria are easily distinguished from non-lactose fermenting colonies by their appearance is an example of:
A. a selective medium
B. a differential medium
C. a medium which is both selective and differential
D. a medium which allows recognizing rickettsiae
E. a technique of little use in diagnosis
B. a differential medium
In general what are exotoxins?
A. lipopolysaccharides, poor antigens, produced by gram-negative bacteria
B. proteins, good antigens, produced by gram-negative bacteria
C. proteins, poor antigens, produced by gram-positive bacteria
D. proteins, good antigens, produced by gram-positive bacteria
D. proteins, good antigens, produced by gram-positive bacteria
Which is the basis for subclassifications of staphylococci?
A. Quellung reaction
B. C substance present in cell wall
C. M substance (protein)
D. phage typing
E. antibiotic susceptibility and resistance characteristics
D. phage typing
Bacterial transformation depends on;
A. a virus intermediate
B. a competent cell taking up DNA from growth medium
C. a conjugation tube forming
D. DNA-ase secreted into the medium
E. heavily encapsulated organisms making contact with each other
B. a competent cell taking up DNA from growth medium
What does a "hanging drop" procedure identify? A. a motile organism B. a gram + bacterium C. a gram - bacterium D. an encapsulated microbe E. an acid-fast cell
A. a motile organism
What is the connector between donors and recipients in bacterial conjugation? A. A flagellum B. double stranded DNA C. single strand RNA D. a pilus E. an axial filament
D. a pilus
Which of the following is most closely related to the Rickettsias? A. blue-green algae B. mites C. viruses D. bacteria E. ticks
C. viruses
Which does not relate to the true bacteria? A. pili B. capsule C. cell wall D. fermentation E. distinct nuclear membrane
E. distinct nuclear membrane
WOF is the method of reproduction of true bacteria? A. sporulation B. binary fission C. transformation D. transduction E. all of the above
B. binary fission
The chromosome of E. coli consists of approximately \_\_\_\_ genes. A. 1 B. 2 C. 23 D. 5000 E. 4.5 million
D. 5000
Who laid the groundwork for modern observational microbiology and was born in the Dutch republic during the 17th century? A. Spinoza B. Rembrant C. Van Leeuwenhoek D. Van Rumstead E. Koch
C. Van Leeuwenhoek
Spirochetes generally possess: A. rigid cell wall B. pili C. axial fibers D. chromoplasts E. conjugation tubes
C. axial fibers
WOF is NOT an anatomical structure of true bacteria? A. pilus B. flagellum C. nuclear membrane D. plasma membrane E. DNA
C. nuclear membrane
WOF pertains to the outermost covering of a virus particle? A. capsid B. flagellum C. cell D. capsule E. spore coats
A. capsid
Physiologically, viruses are most closely related to: A. bacteria B. rickettsia C. fungi D. mold E. yeast
B. rickettsia
Which procedure is used to differentiate genus Mycobacterium from other bacterial genera? A. gram stain B. spore stain C. acid-fast stain D. Widal test
C. acid-fast stain
When the genes for a certain pway are always "turned on" in the cell, the enzymes are said to be: A. inducible B. repressible C. constitutive D. mutated
C. constitutive
What is the reaction where 1,3 diphosphoglycerate loses one of its PO4 molecules to form ATP from ADP called: A. fermentation B. oxidation C. oxidative phosphorylation D. substrate level phosphorylation
D. substrate level phosphorylation
Streptococcus would give WOF fermentation products from glucose? A. butyl alcohol and H2 B. 2,3 butane diol C. lactate D. ethanol and CO2 E. expectorate
C. lactate
Identify the function associated with the cytochrome system:
A. it uses ATP to produce H2O
B. it drains electron energy to produce ATP
C. it removes electrons from glucose
D. it adds electrons to NAD
B. it drains electron energy to produce ATP
NAD contains: A. nicotinic acid and adenlytic acid B. nicotinic acid and 3 PO4 C. thiamine D. thymine
A. nicotinic acid and adenlytic acid
What is the composition of a virus? A. lipid and protein B. carbohydrate and protein C. protein and nucleic acid D. RNA and DNA
C. protein and nucleic acid
What is a lysozyme? A. amylase B. proteolytic enzyme C. mycopolypeptidase D. gelatinase
B. proteolytic enzyme
The family Lactobacillaceae can be divided by whether the bacteria are: A. gram + or gram - B. produces of ethanol and CO2 C. homo or heterofermentative D. A and B
C. homo or heterofermentative
Who was the main contributor to the modern germ theory of disease? A. Hooke B. Lister C. Koch D. Van Leeuwenhoek E. Bacon
C. Koch
WOF is selective for gram - organisms? A. blood agar B. Simmons' citrate agar C. eosin methylene blue D. nutrient broth E. chocolate agar
C. eosin methylene blue
What is the correct classification for the mordant in a gram stain? A. safranin B. crystal violet C. H2O D. alcohol E. Grams iodine
E. Grams iodine
