Removal of the 5' G-cap of mRNA transcripts
A) prevents transcript transport.
B) leads to degradation by exonucleases.
C) extends mRNA half-life.
D) leads to polyadelylation.
E) reduces mRNA half-life.
Correct Answer:
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Q11: HREs are
A)hormone receptors.
B)DNA sequences in promoter regions
Q12: In eukaryotic cells,steroid hormones
A)bind to cytoplasmic receptors,are
Q13: Hormones can be considered
A)inducers.
B)repressors.
C)transcription regulators.
D)translation regulators.
E)enzymes.
Q14: Which of the following secondary structures may
Q15: A similarity between regulation of the lac
Q17: RNA silencing involves
A)miRNAs.
B)siRNAs.
C)double-stranded RNA.
D)a protein called Dicer.
E)All
Q18: Proteins that are encoded by the same
Q19: Activators in eukaryotes
A)bind to enhancers.
B)may act as
Q20: Transcriptionally active genes show lower levels of
Q21: Explain how combinatorial gene regulation permits regulation
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