BIMM 100 Final Study questions n
answers rated A+
Functions of the 5' Cap and Poly A tail - correct answer ✔✔ 1. Protection
2. Export out of the nucleus
3. Translation
Poly A Polymerase - correct answer ✔✔ Adds A's to create a Poly A tail of 200-250 A's
5' Cap addition to pre-mRNAs - correct answer ✔✔ starts with 7 methyl Guanine
next two nucleotides have methylation at the 2' hydroxyl groups
Poly A signals - correct answer ✔✔ AAUAAA poly A site G/U
U1 - correct answer ✔✔ base pairs perfectly with the 5' splice site
U2 - correct answer ✔✔ base pairs nonspecifically with branch point A
Serine Arginine Proteins - correct answer ✔✔ bind exon splice enhancers and help the
spliceosome bind the correct splice sites
mRNA - correct answer ✔✔ Pol II, translated to protein
rRNA - correct answer ✔✔ Pol I, 28S, 18S, 5.8S, 5S, translation
answers rated A+
Functions of the 5' Cap and Poly A tail - correct answer ✔✔ 1. Protection
2. Export out of the nucleus
3. Translation
Poly A Polymerase - correct answer ✔✔ Adds A's to create a Poly A tail of 200-250 A's
5' Cap addition to pre-mRNAs - correct answer ✔✔ starts with 7 methyl Guanine
next two nucleotides have methylation at the 2' hydroxyl groups
Poly A signals - correct answer ✔✔ AAUAAA poly A site G/U
U1 - correct answer ✔✔ base pairs perfectly with the 5' splice site
U2 - correct answer ✔✔ base pairs nonspecifically with branch point A
Serine Arginine Proteins - correct answer ✔✔ bind exon splice enhancers and help the
spliceosome bind the correct splice sites
mRNA - correct answer ✔✔ Pol II, translated to protein
rRNA - correct answer ✔✔ Pol I, 28S, 18S, 5.8S, 5S, translation
