A particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon for the mRNA transcribed is

• 3' UCA 5'

• 3' UGA 5'

• 5' TCA 3'

• 3' ACU 5'

Which of the following does not occur in prokaryotic eukaryotic gene expression, but does in eukaryotic gene expression?

• mRNA, tRNA, and rRNA are transcribed

• RNA polymerase binds to the promoter

• A poly-A tail is added to the 3' end of an mRNA and a cap is added to the 5' end

• Transcription can begin as soon as translation has begun even a little

Alternative RNA splicing

• is a mechanism for increasing the rate of transcription

• can allow the production of proteins of different sizes from a single mRNA

• increases the rate of transcription

• E) is due to the presence or absence of particular snRNPs

A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is

• TTT

• UUA

• UUU

• AAA

Which of the following statements is true about protein synthesis in prokaryotes?

• Extensive RNA processing is required before prokaryotic transcripts can be translated.

• Translation can begin while transcription is still in progress.

• Prokaryotic cells have complicated mechanisms for targeting proteins to the appropriate cellular organelles.

• Translation requires antibiotic activity.