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mRNA
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rRNA
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Genetics

Test 2

QuestionAnswer
mRNA encodes proteins, is translated by ribosomes
rRNA multiple in lg ribosomal subunit, catalyze formation of peptide bonds
Ribozyme RNA with catalytic activity
tRNA contains anticodons that base pair w codons and decode into amino acids, brings amino acids to ribosomes
core promoter directly recruits and binds general transcription factors and RNA polymerase
core promoter same or different in all genes? same
basal transciption apparatus RNA polymerase and general transcription factors
basal transcription apparatus required for transcription in all genes? yes
transcription regulatory proteins bind regulatory elements to repress/activate transcription
actions of transcriptional regulatory proteins acetylation, deacetylation, methylation, demethylation, bromodomain, chromodomain, PHD finger, WD40 repeat
are transcription regulatory proteins same for all RNA polymerases? no, specific
are transcription regulatory proteins same for all cell types? no, specific
are transcription regulatory proteins same for all genes? no, specific
enhancers DNA regulatory elements that act at a large distance
reporter gene gene with obvious phenotype that is used to study regulation of less obvious gene expresssion
DNA regulatory element DNA sequence that increases/dereases gene expression
Types of mutations insertion, deletion, substitution
Effects of mutations frameshift, silent mutation, nonsense mutation, missense mutation
Stop codons UGA, UAA, UAG
What is the ribosome recruited by in eukaryotes? 5' cap (modified guanine)
What is the ribosome recruited by in prokaryotes? Shine-Dalgarno sequence
Order of pieces of eukaryotic mRNA sequence 5' cap, 5' UTR, start codon, ORF, stop codon, 3' UTR, poly(A) tail
Ways prokaryotes can't regulate gene expression chromatin structure, mRNA processing
What causes a change in RNA/protein molecules? change in regulatory DNA
What happens when there is a mutation at a splice site? the intron doesn't get spliced
Created by: karadub03
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