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Quiz 3 A
Terms in this set (22)
Which of the following pairs of terms is mismatched?
Bacteriostatic-kills archaea cells
Application of heat to living cells can result in all of the following except
Decreased thermal death time
Which of the following methods is used to preserve food by slowing the metabolic processes of foodborne microbes?
A library of cloned sequences representing the expressed genes of an organism is known as a
Which of the following regarding antimicrobial control agents is false
Some agents inactivate viruses by attacking cell membrane lipids
Which of the following statements correctly describes the effect a nonsense mutation would have on a gene?
It introduces a premature stop codon into the mRNA
How might a single base substitution in the sequence of a gene affect the amino acid sequence of a protein encoded by the gene?
Only a single amino acid could change because the reading frame would be unaffected
Which of the following types of radiation is nonionizing and has the shortest wavelength?
In the southern blot technique, which of the follow is not required?
Addition of heat-stable DNA polymerase to amplify DNA
An agent used to reduce the number of bacteria on a toilet would most accurately be called a
A suspension of 10^6 bacillus cereus endospores was put in hot-air oven at 170 degrees celcius. Plate counts were used to determine the number of endospores surviving at the time intervals shown. In figure 7.1, what is the thermal death time?
In figure 9.2, the enzyme is step 2 is
The figure at the left in figure 9.3 shows a gene identified by southern blotting. what will a southern blot of the same gene look after PCR?
In table 7.2 which preservative is most effective
Cell-to-cell contact is required for transduction to occur
In the ames test, any colonies that form on the control should be the result of spontaneous mutations
The mRNA in a cell inhibit protein synthesis by forming complementary bonds with RNA
In recombinant DNA technology a vector is a self replicating segment of DNA, such as a plasmid or viral genome
Transposition results in the formation of base substitution mutations in a cell's DNA
Nucleic acid molecules used to deliver new genes to cells are called
A protein has altered function as a result of a single amino acid substitution in the polypeptide. This change resulted from a ___ mutatiion
The use of microbes to make practical products such as vaccines or hormones is called
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