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

A microorganism that is a unicellular organism and lacks a nuclear membrane and true nucleus is classified as:

This constituent of a gram-positive cell wall absorbs crystal violet but is not dissolved by alcohol,thus giving the gram-positive cell its characteristic purple color.

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

All the following environmental factors influence the growth of bacteria EXCEPT:

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

Lysogeny occurs when:

Bacterial species that exhibit phenotypic differences are considered:

What stain is used to stain medically important fungi?

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

Diphtheria is a disease produced by Corynebacterium diphtheriae.However,not all C.diphtheriae bacteria produce the toxin that causes this disease.To produce the toxin,the bacteria must first become infected with a bacteriophage.The process by which bacterial genes are transferred to new bacteria by the bacteriophage is called:

Who was considered the father of protozoology and bacteriology?

In the medical microbiology laboratory,a gram-negative bacterium's ability to ferment this sugar is the first step in its identification.

A clinical laboratory scientist is working in a microbiology laboratory where she receives a viral culture.Should she make a smear so that she can look at the virus under the light microscope?

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 classified as what type of bacteria?

What enables the microbiologist to select the correct media for primary culture and optimize the chance of isolating a pathogenic organism?

The outer cell wall of the gram-negative bacteria serves three important functions,which includes all the following EXCEPT:

All of the following statements are true about viruses EXCEPT:

Why is the interior of the plasma membrane potentially impermeable to water-soluble molecules?

Which is a biochemical process carried out by both obligate and facultative anaerobes?

What structure is a phospholipid bilayer embedded with proteins and cholesterol that regulates the amount of chemicals that pass in and out of a cell?