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PCB 3023 Exam 2: Transcription and Translation Practice Questions and Answers (100% Pass) $12.49   Add to cart

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PCB 3023 Exam 2: Transcription and Translation Practice Questions and Answers (100% Pass)

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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...

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  • August 28, 2024
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©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM

Molecular Cell Biology PCB 3023 BROWARD COLLEGE/ UNIVERSITY of
SOUTH FLORIDA/ UCF COLLEGE Of Sciences




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? - Answer✔️✔️-- yes

- tightly bound nucleosomes, it's harder to get to the DNA so there
is less expression

- DNA is more exposed when the histones aren't packed together so
tightly

dna transcription vs replication - Answer✔️✔️-- replication
synthesizes new (daughter) DNA

- transcription of DNA forms RNA

what direction does transcription proceed? - Answer✔️✔️-RNA is
synthesized 5' to 3'

what nucleotides are used in RNA synthesis? - Answer✔️✔️-- adenine

- guanine

- cytosine

- uracil




1

, ©SOPHIABENNET@2024/2025 Wednesday, August 21, 2024 12:13 PM

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



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