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30 Cards in this Set
- Front
- Back
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a gene is best defined as
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a sequence of nts in DNA that codes for a functional product
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which of the following pairs s mismatched?
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rna polymerase - makes a molecule of RNA from an RNA template
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which of the following statements is false?
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dna replication proceeds in ne direction around the bacterial chromosome
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DNA is constructed of
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two strands of nts running antiparallel
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which of the following is not a product of transcription
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a new strand of dna
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which of the following statements about bacteriocins is false?
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they cause food poisoning symptoms
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figure 8.1 which colonies are streptomycin-resistant and Lucine-requiring?
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4 and 8
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what will be the result of conjugation between cultures 1 and 2
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1 will remain the same, 2 will become f, leu, his
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if culture 1 mutates to Hfr, what will be the result of conjugation btwn the 2 cultures
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1 will remain the same, recombination will occur in 2
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an enzyme produced in response to the presence of a substrate is called a
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inducible enzyme
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when gluc is high, cAMP is _____ : CAP _____ bind the lac operator, and RNA polymerase ____ bind the lac promoter
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low, does not, does not
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transformation is the transfer f DNA from a donor to a recipient cell
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as naked DNA in solution
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genetic change in bacteria can be brought about by
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all of of the above (transduction, transformation, conjugation, mutation)
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which of the following statements regarding a bacterium that is R+ is false?
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it is F+
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the initial effect of ionizing radiation on a cell is that it causes
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the formation of highly reactive ions
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according o the operon model, for the synthesis of an inducible enzyme to occur, the
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substrate must bind to the repressor
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synthesis of a repressible enzyme is stopped by the
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corepressor-repressor complex binding to the operator
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if base 4 is thyme what is base 4'?
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adenine
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if base 4 is thyamine, what is base 11'?
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thymine
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base 2 is attached to
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deoxyribose
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the damage caused by UV radiation is
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cut out and replaced
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if the sequence of AA encoded by a strand of DNA is ser-ala-lys-leu, what is the order of bases in the sense strand of DNA?
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3' AGACGTTTCAAT
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If the sequence of AA ended by a strand of DNA is ser-ala-lys-leu, the coding for the antisense strand of DNA is
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5' TCTGCAAAGTTA
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the anticodon for valine is
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CAA
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what is the sequence of AA encoded by the following sequence of bases in a strand of DNA
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translation would stop at the first codon
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if a frameshift mutation occured in the sequence of bases shown below, what would be the sequence of AA coded for?
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answer can't be determined
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if compound C reacts with the allosteric site of enzyme A, this would exemplify
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feedback inhibition
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if enzyme A s a repressible enzyme, compound C would
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bind to the corepressor
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if enzyme A is an inducible enzyme
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compound A would bind to the repressor
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conjugation differs from reproduction because conjugation
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transfers DNA horizontally, to cells in the same generation
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