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73 Cards in this Set
- Front
- Back
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Miesher noted that "nuclein"....
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contains a large amount of phosphorous
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Levene postulated that nucleic acid had...
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a "tetranucleotide" repeating structure
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Which of the following was not an observation made by Feulgen regarding DNA in the nuclei of cells?
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The amount of DNA was the same for all prokaryotes
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Griffith concluded that transformation was the result of...
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Griffith did not identify the "transforming principle
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Based on your knowledge of the Avery, Macleod, and McCarty experiments, RNA + live R cells resulted in...
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no transformation
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dna + live R cells resulted in
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transformation
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dna + dnase + live r cells resulted in
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no transformation
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In contrast to Griffth's earlier experiments, Dawson observed that transformation occurred...
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In-vitro
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Fraenkel-Conrat and Singer demonstrated that...
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RNA is the genetic material of tobacco mosaic virus
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Hershey and Chase demonstrated that...
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DNA is the genetic material of T2 bacteriophage
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Experiments revealing that bases were actually paired in DNA were...
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NOT chargaff, okazaki, or meselson and stahl
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Deoxythymidine is a...
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nucleoside
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Guanine is a...
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2 amino, 6 oxy purine
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Thymine is a
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2,4 oxy, 5 methyl pyrimidine
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In E. coli, the unwinding of DNA prior to replication is accomplished by the enzyme...
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Helicase
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Cytosine bound to a deoxyribose sugar results in a molecule of...
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deoxycytidine
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Adenine bound to a deoxyribose sugar results in a molecule of...
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deoxyadenosine
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X-ray diffraction experiments on crystalline DNA were performed by
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Franklin and Wilkins
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Franklin and Wilkins revealed the repetitive distances of
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34, 20, and 3.4 angstroms
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In examining the unwinding of DNA prior to transcription in E. coli, it is found that this unwinding is accomplished by the action of...
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RNA polymerase + sigma
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In rats, the recognition sequences in promoters for RNA polymerase II are...
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"TATA" and "CAAT" boxes
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In E. coli, the recognition sequences in promoters for RNA POLYMERASE ARE
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-10 and -35 boxes
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In rabbits, transcription of structural and non-structural genes requires...
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More than one of the above...
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In E. coli, the promoter sequence 5' TATAAT 3' is a....
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consensus sequence
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The organism utilized by Meselson and Stahl in their work demonstrating that replication is semiconservative was...
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E. coli
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A-form, Helix sense
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right
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Z-form, Helix sense
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left
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B-form:
Helix sense Base pairs per turn Rotation per base pair Diameter of helix |
right
10.0 +36.0 20 |
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C-form:
Helix sense Base pairs per turn Rotation per base pair Diameter of helix |
right
9.3 +38.6 19 |
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Molecules of snRNP are...
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ribonucleoproteins
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The snRNAs are...
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involved in intron excision
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In the lariat model of mRNA splicing....
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none of the above
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In tRNAs, the terminal ACC sequence is....
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found at the 3' end
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Stabilization of tRNA on the ribosome is the function of the...
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T loop
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Recognition by synthetase of tRNAs is associate with the...
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D loop
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In tRNAs, the D loop is found on the...
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5' side
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In tRNAs, the T loop is found on the...
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3' side
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Activation of amino acids requires...
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aminoacyl-tRNA synthetase
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transfer RNA molecules can be...
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charged
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the activation reaction requires a molecule of...
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ATP
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the charging reaction requires a molecule of...
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I DONT KNOW
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In E. coli, translation of the mRNA below would result in the polypeptide...
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fmet-met-phe-val-pro-pro-phe
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In the initiation of translation in E. coli, binding of mRNA to the 30S subunit of the ribosome is facilitated by...
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IF-2
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In the elongation stage of translation in E. coli, translocation of the ribosome requires
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EF-G
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A "Poly-U" RNA utilized as a mRNA results in an amino acid chain of...
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phenylalanine
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A tRNA with the anticodon 3' CUG 5' would recognize the mRNA condons
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GAU & GAC
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the genetic code is degenerate because...
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amino acids have more than one codon
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Activation of amino acids requires...
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aminoacyl-tRNA synthetase
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transfer RNA molecules can be...
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charged
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the activation reaction requires a molecule of...
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ATP
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the charging reaction requires a molecule of...
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I DONT KNOW
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In E. coli, translation of the mRNA below would result in the polypeptide...
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fmet-met-phe-val-pro-pro-phe
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In the initiation of translation in E. coli, binding of mRNA to the 30S subunit of the ribosome is facilitated by...
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IF-2
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In the elongation stage of translation in E. coli, translocation of the ribosome requires
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EF-G
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A "Poly-U" RNA utilized as a mRNA results in an amino acid chain of...
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phenylalanine
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A tRNA with the anticodon 3' CUG 5' would recognize the mRNA condons
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GAU & GAC
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the genetic code is degenerate because...
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amino acids have more than one codon
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of the 64 codons, 61 code for amino acids. thus, in e. coli, there are...
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app. 50 different tRNAs
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Which of the following can serve as a terminator codon?
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UAG
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Which of the following can serve as an initiator codon?
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GUG
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In a mouse cell, translation of the mRNA below would result in the polypeptide
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met-val-phe-gly-lys-pro-met-val
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Eukaryotic mRNAs are capped with
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7 methyl guanosine
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the process of adding a tail to mRNA is called...
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polyadenylation
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prokaryotic mRNAs can also be called...
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primary transciprs, precursor mRNAs, or processed mRNAs
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in eukaryotes, the commonly found rRNAs are...
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5.8S; 16S, 23S, 28S
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During initiation of translation, the initiator tRNA is positioned in the...
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peptidyl binding site
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during the elongation stage of translation, charged tRNAs are position in the A site utilizing an...
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EF-Tu/GTP complex
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translation results in...
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mature mRNAs
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the genetic code is...
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non-overlapping, ambiguous, non restrictive
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all amino acids have at lease 4 corresponding codons?
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false
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Crick showed that the genetic code was a triplet code by employing...
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frameshift mutations
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The 70S ribosome is composed of ___ and ____ subunits
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30S and 40S
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The 80S ribosome is composed of ___ and ____ subunits
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30S and 50S
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