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BIO340 Exam 4
Terms in this set (20)
In the lac operon, what acts as the inducer?
In negative control of the lac operon, what molecule would you expect to find bound to the operator if there is no transcription?
Regarding regulation of the trp operon, what might one appropriately call the amino acid tryptophan?
Attenuation in the E. coli trp operon results from the formation of trp mRNA secondary structures. True or False?
Which of the following regulatory sequences may be located tens of kilo bases away from the genes they regulate in eukaryotes?
The enhancer element in the GAL gene system is called the upstream activator sequence. True or False?
Which of the following are not involved as regulators in GAL gene system?
Which of the following tends to be associated with genes whose transcription is regulated?
Acetylation of histones neutralizes the positive charge and relaxes the histone/DNA interaction. True or False?
In animals, the Drosha enzyme cuts pri-miRNA to produce miRNA. True or False?
In selecting recombinant bacteria, cells are chosen that are resistant to a specific antibiotic. How are the bacteria made resistant?
The antibiotic resistance gene is encoded in the vector/plasmid.
In the polymerase chain reaction, what is the purpose of the step in which the temperature is ~72 C?
DNA polymerase synthesis of the DNA
In using Agrobacterium radiobacter (Agrobacterium tumefaciens) to transfer genes into plants, what is transferred from bacterium to plant?
Most cancers are caused by somatic mutations. True or False?
What can proto-oncogenes be converted to?
What is a normal response to severe DNA damage?
What is the name of the protein that combines with cyclins to exert local control of the cell cycle?
What is the name of the project seeking to determine transcriptional start sites, promoters, enhancers, and other functional elements in the human genome?
How would someone identify genomic sequences of entire communities from environmental samples?
What is one cause for the ~20,000 genes in the human genome producing a vastly larger number of different proteins?
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