Microbiology Lab Study Questions

All of the following are methods that can be used to isolate bacteria from a mixed culture EXCEPT?

Which organelle is involved in the packaging of proteins for secretion?

The internationally recognized reference for bacterial classification and identification is called Bergey's Manual.

Which carbohydrate is the primary or preferred starting compound for glycolysis and the fermentation pathway?

The term aerobic, anaerobic, and microaerophilic are used to categorize microorganisms based on their ______ requirements.

All of the following body sites normally have large numbers of resident microbiota EXCEPT?

Which of the following items would be disposed of into the sharps container?

Most human pathogens are classified as thermophiles.

If an organism produces stable acids as an end-product of glucose fermentation, the methyl red test (MR test) will be red, indicating a positive result.

Which statement correctly describes the level of contamination on different objects?

How is a glass culture tube handled during aseptic transfers?

When is it crucial to wear protective eyewear when working in the lab?

Which of the following sequences would result from the replication of the following DNA sequence: ATTGCTGGA?

Microorganisms can be described as being ubiquitous which means that they:

Which of the following diseases are caused by acid-fast bacterium:

Which of the following is a chemical means of controlling microbial growth?

Catalase breaks hydrogen peroxide down in water and carbon dioxide.

How is a respirometer used to measure fermentation in the Cellular Respiration experiment?

Gram negative cells appear purple after Gram staining whereas gram positive cells appear pink.

The cloudy growth seen in a broth culture is referred to as:

Which test uses a medium that is both selective and differential for members of the genus Staphylococcus?

In addition to linking together nucleotides to synthesize a daughter strand, DNA polymerase also ______.

An antibiotic which interferes with the activity of ribosomes would have the most effect on which of the following?

Human skin provides an environment with NaCl levels slightly above that of most bacterial cells. Which organism would most likely be found on the skin?

All of the following are found in most prokaryotic cells EXCEPT:

The smallest living units of the human body are __________.

An organism has been shown to produce hydrogen sulfide and indole in its metabolism. These are examples of _____________ characteristics that can be helpful in the identification of the microorganism.

All of the following are common to all cells at some point in their development EXCEPT:

The purpose of heat fixation is to _______.

Which of the following is true of a bacterial species that produces dark colonies when grown on MacConkey agar?

When first viewing a specimen using the brightfield microscope, it is recommended that you begin viewing the specimen with which objective lens?

In living organisms, information for making proteins flows from _______.

An antimicrobial, such as isoniazid, that is only effective against mycobacterial species would be referred to as a __________ drug.

The ability to distinguish fine detail or discriminate between two very closely spaced objects is called:

Which type of reaction(s) requires oxygen as a substrate?

Phenol red carbohydrate broths with Durham tubes can detect all of the following EXCEPT:

The monomers that make up DNA molecules are called _______.

The process of forming mRNA from the template strand of DNA is called _____________.

Immersion oil must only be used with which objective lens?

The sources of all antimicrobial drugs are fungi and other microorganisms.

In the Gram stain, the chemical that fixes dye in or on cells by forming an insoluble compound is referred to as the _______________.

A pure culture contains:

All of the following are true of an enzyme-catalyzed reaction EXCEPT?

Before attempting to identify an unknown bacterial species, the organism must be isolated in a pure culture.

When a large zone of no growth is found around an antibiotic disc being used for identification purposes, this generally means that the microbe is ______ to the antibiotic.

Stains are commonly used for all of the following EXCEPT:

All of the following organisms are expected to grow within an anaerobe jar EXCEPT:

Eukaryotes have membrane-bound organelles.

A hypertonic solution is prepared by the addition of sucrose. Which of the following would happen to bacteria placed in this solution?

Which of the following processes removes or destroys endospores?