Microbiology Quiz

There is an outbreak of watery diarrhea in six members of a party of 20 who ate at a Chinese restaurant the day before. Fried rice is implicated. What is the most likely causative agent?

• Bacillus cereus

• Giardia lamblia

• Staphylococcus aureus

• Escherichia coli

• Salmonella enteritidis

In which of the following phases of growth is a Gram-positive bacterium most susceptible to the action of penicillin?

• Lag

• Exponential

• Stationary

• Decline

• Death

Subviral particles best described as non-self-replicating ssRNAS

• Prions

• Virions

• Virusoids

• Virus

Typically flask-shaped lesion of Amoebiasis is usually seen in

• Amoebic colitis

• Amoebic liver abscess

• Amoebiasis cutis

• Acute amoebiasis

B-lactam drugs bind to penicillin-binding proteins to halt the synthesis of peptidoglycan. Where are these proteins located?

• In the cytoplasm

• In the cytoplasmic membrane

• In the periplasmic space

• In the peptidoglycan itself

• In the capsule

What is the only Schistosome that produces urinary tract disease?

• S. japonicum

• S. mansoni

• S. haematobium

• S. mekongi

Bacterial fimbriae present on the outer cell surface are used for:

• cellular activity

• sexual reproduction

• cell wall synthesis

• adherence to surfaces

• adherence, and exchange of genetic information

Which were the investigators lived at the same time?

• Koch and Pasteur

• Van Leeuwenhoek and Hesse

• Fleming & Hooke

• Hooke & Berg

The major constituents in agar are

• Lipids

• Amino acids

• Polysaccharides

• Polypeptides

The first phase of a growth curve is

• Log phase

• Lag Phase

• Death Phase

• Stationary phase