PCB 3023 Exam 2: Transcription and
Translation Practice Questions and
Answers (100% Pass)
does the structure of the DNA (nucleosomes) impact the ability of
the RNA polymerase to transcribe genes? - Answer️️ -- yes
- tightly bound nucleosomes, it's harder to get to the DNA so there
is less...
Molecular Cell Biology PCB 3023 BROWARD COLLEGE/ UNIVERSITY of
SOUTH FLORIDA/ UCF COLLEGE Of Sciences
what is a promoter in RNA transcription? why is it important? -
Answer✔️✔️-- promoter: a sequence in the DNA where the
transcription is initiated
- importance: control the binding of RNA polymerase to DNA
Transcription steps - Answer✔️✔️-1. Initiation
2. Elongation
3. Termination
what is an intron? - Answer✔️✔️-- a segment of a DNA or RNA
molecule that does not code for proteins and interrupts the
sequence of genes.
what is an exon? - Answer✔️✔️-- An expressed sequence of DNA;
codes for a protein
is it true that one gene codes for one protein? - Answer✔️✔️-- no,
genes can code for a number of proteins
what happens after mRNA as been transcribed in euks? -
Answer✔️✔️-- mRNA is exported to the cytosol for processing which
includes: capping of the 5' end, splicing, and polyadenylation of the
3' end
what is alternative splicing? how does this impact the protein which
will be produced by the transcript - Answer✔️✔️-- mRNA processing
2
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