035
(Select all that apply) Which of the following are correct about the structure and function of the
TATA-binding protein (TBP)?
TBP binds to the major groove of the DNA.
TBP directly recruits RNA Polymerase II to the promoter.
TBP recognizes the TATA box sequence.
TBP causes a bend in the DNA upon binding.
TBP is part of the TFIID complex.
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Q36
(Select all that apply) Which of the following statements about the evolution of splicing
mechanisms are supported by the evidence?
The diversity of splicing mechanisms in different organisms and cellular compartments
supports the idea of multiple independent origins of introns
The similarities between group I introns and DNA/RNA polymerases suggest a common
evolutionary origin for these systems
Group I introns represent an evolutionary intermediate between self-splicing group II
introns and the spliceosome
The spliceosome evolved from ancestral group II introns, with snRNAs replacing the
catalytic domains of the intron
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Q37
(Select all that apply) Which of the following are involved in stabilizing the codon-anticodon
interaction in the ribosomal A site?
16S rRNA bases (in bacteria)
Elongation factor EF-Tu (in bacteria)
Ribosomal proteins
A minor interactions with rRNA bases at all positions of the codon
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Q38
(Select all that apply) Which statements about the interactions between gene-specific transcription
factors and DNA are correct?
Zinc finger domains only recognize RNA sequences.
All gene-specific transcription factors directly interact with RNA Polymerase II.
Leucine zipper motifs facilitate dimerization of transcription factors.
Helix-turn-helix domains typically bind the major groove of DNA.
Gene-specific transcription factors can recruit coactivators like CBP/p300.
