BIOL 2117 EXAM SCRIPT FINAL PAPER FULL
QUESTIONS AND ANSWERS 2026
◉ semi conservative
Answer: in each new DNA double helix, one strand is from the
original molecule, and one strand is new
◉ Helicase
Answer: unwinds DNA
◉ Primase
Answer: Lays down RNA primers
◉ DNA Polymerase III
Answer: Builds new strand 5' to 3'
◉ Ligase
Answer: seals DNA Okazaki fragments on lagging strand
◉ What is the process of transcription?
, Answer: DNA is transcribed into mRNA.
◉ Where does transcription occur in eukaryotes?
Answer: In the nucleus.
◉ Where does transcription occur in prokaryotes?
Answer: In the nucleoid.
◉ What are the three main steps of transcription?
Answer: Initiation, elongation, and termination.
◉ What enzyme is responsible for transcription?
Answer: RNA polymerase.
◉ Does RNA polymerase require a primer for transcription?
Answer: No, a primer is not needed.
◉ What modifications must eukaryotic mRNA undergo after
transcription?
Answer: 5' cap, poly A tail, and RNA splicing.
QUESTIONS AND ANSWERS 2026
◉ semi conservative
Answer: in each new DNA double helix, one strand is from the
original molecule, and one strand is new
◉ Helicase
Answer: unwinds DNA
◉ Primase
Answer: Lays down RNA primers
◉ DNA Polymerase III
Answer: Builds new strand 5' to 3'
◉ Ligase
Answer: seals DNA Okazaki fragments on lagging strand
◉ What is the process of transcription?
, Answer: DNA is transcribed into mRNA.
◉ Where does transcription occur in eukaryotes?
Answer: In the nucleus.
◉ Where does transcription occur in prokaryotes?
Answer: In the nucleoid.
◉ What are the three main steps of transcription?
Answer: Initiation, elongation, and termination.
◉ What enzyme is responsible for transcription?
Answer: RNA polymerase.
◉ Does RNA polymerase require a primer for transcription?
Answer: No, a primer is not needed.
◉ What modifications must eukaryotic mRNA undergo after
transcription?
Answer: 5' cap, poly A tail, and RNA splicing.
