Exam 16: Transcription and Translation

Alpha-amanitin is a toxin produced by the death cap mushroom.It blocks the synthesis of mRNA.What effect would it have on health of the organism that ate death cap mushrooms?

Figure 16.3. -Refer to Figure 16.3.What is the function of the AGU on the loop of the tRNA?

The ribosome-binding site of prokaryotes is also known as _____.

What molecule in the spliceosome lowers the activation energy so intron removal reactions can occur?

Which of the following processes is central to the initiation of transcription?

How are RNA hairpin turns related to termination?

Figure 16.1 -The enzyme complex associated with DNA in the figure is _____.

If the DNA code for a particular amino acid is AGT,then the anticodon on the tRNA would be _____.

Figure 16.2. -Refer to Figure 16.2.The mRNA is smaller than the length of the DNA that codes for it because _____.

How does termination of translation take place?

There are 61 codons that each specify the addition of a specific amino acid,and three stop codons for which there is no corresponding amino acid.However,there are only about 40 tRNA molecules,representing 40 anticodons.How is that possible?

Codons are three-base sequences that specify the addition of a single amino acid.How do eukaryotic codons and prokaryotic codons compare?

Which of the following does not occur in post-transcriptional modifications occurring in eukaryotic mRNAs?

A mutation that results in premature termination of translation _____.

There should be a strong positive correlation between the rate of protein synthesis and _____.

What molecule/feature ensures that the correct amino acid is added with reading of a specific codon during translation?

Eukaryotes have three nuclear RNA polymerases.The primary function of RNA polymerase II is _____.

Which of the following occurs in prokaryotes,but not eukaryotes?