Review from Test 2 Flashcards
Which of the following is NOT a characteristic of transcription?
It synthesizes a complimentary copy of the entire genome at once
What is the function of RNA polymerase?
to read a DNA strand and synthesize a complementary mRNA sequence
The DNA sequence where RNA polymerase binds to begin transcription is known as the
Promoter
The DNA sequence that causes RNA polymerase and the mRNA transcript to release from the DNA is known as the
Terminator
The DNA template strand is
the strand which RNA polymerase reads to make an mRNA transcript
The initiation site is
the first nucleotide transcribed by RNA polymerase into a complimentary nucleotide and given the number +1
During transcription, what happens during the initiation stage?
RNA polymerase binds to and unwinds the DNA double helix
During transcription, what happens during the elongation stage?
RNA polymerase synthesizes a complementary mRNA strand
What process involves the removal of non-coding regions (introns) from pre-mRNA to generate mature mRNA?
Splicing
Which of the following is NOT true regarding the pre-mRNA processing in Eukaryotic cells?
The spliceosome protects the mRNA from degradation
Which of the following takes place in the initiation step of translation?
a ribosome, mRNA transcript, and initiator tRNA assemble
In translation, the mRNA molecule is read
from 5’ to 3’
What is the primary role of translation initiation
Initiating the assembly of ribosomes for protein synthesis
What is the purpose of the release facto in translation?
it signals the ribosome to release the completed protein
What happens to the ribosome after translation is completed
it detaches and can be used from another round of translation
According to the Central Dogma of biology, the order of nucleotides in gene within a DNA molecule is transcribed into the order of nucleotides in a ________ strand, which is in turn translated into the primary sequence of _____________ in a __________
mRNA
protein
