Exam 1: Bacterial Cell Structure, Physiology, Metabolism, and Genetics

What process involves transferring or exchanging genes between similar regions on two separate DNA molecules?

The laboratory receives a specimen in which the doctor suspects that the infecting organism is Haemophilus influenzae.This organism grows best in an atmosphere that contains 5% to 10% carbon dioxide.It is therefore classified as what type of bacteria?

When performing a Gram stain on a gram-negative organism, the crystal violet is absorbed into this outer cell wall layer, then washed away with the acetone alcohol.What is the main component of the outer layer of the cell wall?

The three basic shapes of bacteria include all the following except:

What stain is used for medically important fungi?

What is the name of the numerous short (3 to 10 mm) projections that extend from the cell surface and are used for cellular locomotion?

Prokaryotic cells have which the following structures in their cytoplasm?

All the following are types of media except:

To survive, microbial inhabitants have learned to adapt by varying all of the following except:

_____ enzymes cut the bacterial DNA at specific locations.

Lysogeny occurs when:

A clinical laboratory scientist is working on the bench, reading plates, and notices that a culture has both a unicellular form and a filamentous form.What type of organism exhibits these forms?

Diagnostic microbiologists apply placement and naming of bacterial organisms into all the following categories except:

What type of fermentation produces lactic, acetic, succinic, and formic acids as the end products?

When bacteria are growing, they go through a log phase when:

A _____ is a single, closed, circular piece of DNA that is supercoiled to fit inside a bacterial cell.

A microbiology technologist performs a traditional bacterial stain on a colony from a wound culture that is suspected to contain bacteria from the genus Clostridium.The unstained areas in the bacterial cell observed by the technologist are called:

Mycobacteria have a gram-positive cell wall structure with a waxy layer containing these what two compounds?

Mycoplasma and Ureaplasma spp.must have media supplemented with serum or sugar as nutrients and because:

Diagnostic schemes in the microbiology laboratory typically analyze each unknown bacterium's metabolic processes for all the following except: