What term is typically used to describe gene systems that respond to the supply of a required metabolite such as an amino acid? repressible O inducible
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- The promoter and terminator regions of genes are important in: a. coding for amino acids b. gene regulation c. structural support for the gene d. intron removal e. anticodon recognitionA transposable element or sequence of DNA that can move within the genome Group of answer choices Transposon Okazaki fragments Reverse transcriptase PrimerA mutation at the operator site of a positive inducible operon that causes the sequence of the operator to change, would result in: Group of answer choices Activator unable to bind to DNA, transcription turned on Activator binds to DNA, transcription turned off Activator binds to DNA, transcription turned on Activator unable to bind to DNA, transcription turned off
- A transcription repressor results in a decrease in transcription of an operon. This is an example of ____________________________. a constitutive system an inducible system positive control negative control a repressible systemThe enzymes mentioned below are used as tools during cloning, DNA sequencing and/or gene therapy. Explain what they are used for. Also mention the actual biological function of the respective enzymes. T7 RNA polymerase reverse transcriptase RNaseHInsertion or removal of one or two nucleotide base pairs in a protein coding region of DNA usually results in a _________ mutation. Group of answer choices suppressor frameshift transversion transition reversion
- The process in which the two-dimensional structure of RNA from the L region of an operon can either prevent or allow transcription of the structural genes is called _____________. Group of answer choices Activation Co-repression Induction Attenuation Repressionthe trp operon is an example of… ? enzyme repression enzyme induction catabolite repressionProtein Z in the figure below depicts the activity of which bacterial Nucleoid Associated Protein that may silence gene promoters (select one)? A. Protein HU B. Histone H3 C. Dps D. Integration Host Factor E. H-NS
- All the following are characteristics of inducible operons except they are normally inactive they involve a repressor they are often involved in anabolic pathways they are active in the presence of an inducer they are a way for bacterial cells to conserve energyThe enzymes mentioned below are used as tools during cloning, DNA sequencing and/or gene therapy. Explain what they are used for. Also mention the actual biological function of the respective enzymes.6.1. T7 RNA polymerase6.2. Reverse transcriptase6.3. EcoRIWHICH OF THE FOLLOWING TECHNIQUE IS NOT USED TO MANIPULATE THE GENOME 1. siRNA 2. ZF (zinc finger) 3. TALE (transcription activator light effector) 4. CRISPR