Home
Flashcards
Preview
Microbio Midterm 2
Home
Get App
Take Quiz
Create
Which epidemic is not virus borne?
A) AIDS
B) polio
C) bubonic plague
D) smallpox
E) SARS
C) bubonic plague
An icosahedral capsid has how many sides?
20
Viruses may be classified by the _______ method
Baltimore
So far, the known mechanisms of replication and mRNA expression define how many fundamental groups of virus species?
7
The period of time when virions are virtually undetectable inside the infected cell is the ______
Eclipse Period
Which form of control is the least reversible and most drastic?
A) control of post-transcripton
B) translational control
C) alterations of DNA sequence
D) posttranslational control
E) control of transcription
C) alterations of DNA sequence
Which is the favored carbon source of E. coli?
Glucose
Transcriptional attenuation is a common regulatory strategy used to control many operons that code for what?
Amino acid biosynthesis
Which of the following is not true of phase variation?
A) It may help the bacteria avoid the immune system
B) It only occurs in prokaryotes
C) The orientation of the DNA sequence is inverted
D) All are true
E) It can result in a change in microbial appearance
B) it only occurs in prokaryotes
Integrated circuits can:
A) send a virus down alt. lifestyle paths
B) couple the genetic and biochemical control of a metabolic pathway
C) time the envents of a developmental cycle
D) all of the above
E) none of the above
E) all of the above
Which of the following is a useful reporter gene?
A) horseradish peroxidase
B) gadA
C) transposase
D) X gal
E) lacZ
E) lacZ
At what level can a cell regulate production of a protein?
A) transcription
B) translation
C) stability of the mRNA
D) all of the above
E) none of the above
D) all of the above
Which of the following statements is false with respect to reporter fusions?
A) all are true
B) reporter genes encode proteins whose activity is easily assayed
C) reporter fusions facillitate monitoring the expression of genes whose products are difficult to measure directly
D) all are false
E) gene regulation can be examined by fusing the promoter of the gene to a reporter gene
A) all are true
Which of the following techniques would be used to monitor changes in mRNA levels?
A) Western blots
B) Eastern blots
C) Northern blots
D) Southern blots
E) SDS-PAGE
C) Northern blot
Which technique would be used to monitor changes in protein levels?
Western blot
In the western blot procedure, proteins are transferred from the gel to a ____
Polyvinylidine fluoride (PVDF) membrane
The organism producing an insecticidal protein is _____
Bacillus thurigiensis
Which metabolism is thought to be absent in the 1st cells?
Aerobic Respiration
Which is correct nomenclature of ESCHERICHIA COLI?
Escherichia coli
The description of distinct life forms and their organization into different categories is called ______
Taxonomy
Which of the following would not be a good choice to use as a molecular clock to compare the 3 domains?
A) chloroplast proteins
B) RNA polymerase
C) rRNA
D) tRNA
E) ribosomal proteins
A) chloroplast proteins
Which of the following scientists is responsible for defining the Archaea as a 3rd domain?
A) James Watson
B) Norm Pace
C) Francis Crick
D) Carl Woese
E) Rosalind Franklin
D) Carl Woese
Which of the following does not typically contribute to horizontal gene transfer?
A) transposable elements
B) plasmids
C) bacteriophages
D) genome replication
E) viruses
D) genome replication
Fungi grow hyphae with cell walls of _____
Chitin
Sets of genes in operons are coordinately regulated by which of the following?
A) protein repressors
B) activators
C) sigma factors
D) small RNAs
E) all of the above
E) all of the above
If a gene is always expressed, it is ______
Constitutive
Which phyla produces what are called "true" mushrooms?
Basidiomycetes
T or F: All 3 gene products of the lac operon are required for the utilization of lactose to occur
True
False
F
T or F: Fossil stromatolites are among the earliest forms of life on Earth
True
False
T
T or F: Some yeasts can undergoes alt. of generations
True
False
T
Author
Hatsumi743
ID
158839
Card Set
Microbio Midterm 2
Description
Microbio Midterm 2 Questions
Updated
6/15/2012, 5:12:05 AM
Show Answers
Home
Flashcards
Preview