A______ is used in industrial microbiology to produce microbial products thatare only synthesized during log phase growth

   Nitrogen is a growth-limiting nutrient for many organisms because

Why do RNA viruses appear have higher rates of mutation?

What is an oncogene ?

 The most conclusive evidence that viruses cause cancers was provided by

Tumors invade other organs and tissues in aprocess called

  During which  growth phase are more susceptible to drugs?

 Which of the following events occurs in the lytic cycle of bacteriophage T4 infection but NOT in the lysogenic cycle ?

A virus's ability to infect an animal cell depends primarily upon the

Shingles is an example of

Which viral familyand representative disease contains single -stranded + RNA and reversetranscriptase ?

A viral infection which does not result in the production of new virions is ____infection(s)

Which of the following would be the first step in a virus with a -(minus) strand of RNA

Creating conditions in the laboratory that promote the growth of some microbes while Inhibiting the growth of others is called

   ____ were first identified in cancer-causingviruses and can induce ____in infected cells

 At temperatures higher than the maximum growth temperature for an organism

A patient sample froman infected wound was cultured on medium containing high salt so that onlyhalophilic organisms could grow. In addition, the medium contains mannitol (asugar alcohol) and phenol red dye that indicates whether or not fermentation ofmannitol has taken place by changing to a yellow color as the pH drops. Thistype of media would best be described as

  Blood agar plates are an example of ______medium

  Which of the following methods provides information about the number of living cells in a sample of bacterial culture?

Which of the following statements describes the lysogenic cycle of lambda (I) phage?

Which of the following agents is capable of inducing conversion of a prophage to the lytic cycle?

Which of the following is a feature shared by viruses and living organisms ?

Which of the following laboratory procedures is used for culturing animal viruses in thelaboratory?

 Bacteriophages derive all of the following from the host cell EXCEPT

 Which of the following is characteristic of the lytic cycle ?

The mechanism whereby an enveloped virus leaves a host cell is called

Some viruses , such as human herpesvirus 1, infect a cell without causing symptoms. These are called

 A microorganism grows in the lab on medium-containing mineral salts but no organic compounds. The organism is likely to be a(n)

Which of the following lists stages of a lytic replication cycle in order from earliest to latest stages?

I.              Synthesis

II.            Assembly

III.           Attachment

IV.         Release

V.           Entry

  Which description of antigenic drift and antigenic shift in the influenza virus is incorrectly matched?

What contributes to antigenic shift in influenza viruses ?

When cells are metabolically active but not dividing, they are in the _____ phase.

Which of the following statements is NOT true of lysogeny ?

 Which of the following places these items in the correct order for DNA -virus replication?

 1. Maturation

2.DNA synthesis

3.Transcription

4.Translation

An envelope is acquired during which of the following steps?

Which of the following can be effective in preventing the onset of viral infection in humans?

 When would a microbiologist use thioglycolate?

 A cell uses an organic carbon source and obtains energy from light would be called a

An aquatic microbe that can grow only near the surface of the water is probably which of the following?

 Lysogeny can result in all of the following EXCEPT

Viruses which infect many different tissue types are said to have a(n)

 Bacteriophage replication differs from because only bacteriophage replication involves

 A persistent infection is one in which

How would humans (andmany microbes that the human body) be best described in terms of nutritionalrequirements?

Organisms that can grow with or without oxygen present are

 Antiviral drugs that have become useful are usually associated with which of the following properties?

 Plaque assays are used for

A fastidious organism might be grown of the following types of media?

Which of the following methods would staff use to disinfect surfaces in operating rooms?

Attachment of herpesviruses results in _________, a process in which the host cell facilitates viral entry.

 The growth of bacterial cultures is best described as

A cell is infected with a virus carrying anoncogene sequence in its genome. What process may occur if the oncogene isexpressed in the infected cell ?

Rates of cell production and cell death are approximately equal during the ____phase of growth.

A(n)______ organism require( s) oxygen for growth

 A clear area against a confluent lawn of bacteria is called a

A microbe that grows only at the bottom of a tube of thioglycollate medium is probably a(n)

An organism that requires chemical nutrients which serve as final electron acceptors is a(n)

A chemical used to control microbial growth on inanimate objects is called a(n)

 Microaerophiles are microbes that grow best at low

  ______are complex communities of various types of microbes that adhere to surfaces.