What Do You Know About DNA And RNA Transcription?

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Karyntaylor
K
Karyntaylor
Community Contributor
Quizzes Created: 1 | Total Attempts: 408
| Attempts: 408
SettingsSettings
Please wait...
  • 1/8 Questions
    Transcription is the process in which complementary mRNA is formed from a DNA template. - ProProfs

    Transcription is the process in which complementary mRNA is formed from a DNA template.

    • True
    • False
Please wait...
About This Quiz

What do you know about DNA and RNA Transcription? Transcription takes place in two broad steps. The first stage involves the pre-messenger RNA being formed with the involvement of RNA polymerase enzymes. Do you remember the rest or do you need a refresher course? Take up this quiz and see just how much you got to understand from class. All the best!

What Do You Know About DNA And RNA Transcription? - Quiz

Quiz Preview

  • 2. 

    During initiation what enzyme binds to a specific region of DNA ?

    • DNA polymerase

    • RNA polymerase

    • MRNA polymerase

    Correct Answer
    A. RNA polymerase
    Explanation
    During initiation, RNA polymerase binds to a specific region of DNA. RNA polymerase is responsible for transcribing DNA into RNA by synthesizing a complementary RNA strand. It recognizes and binds to a specific DNA sequence called the promoter region, which signals the start of a gene. Once bound, RNA polymerase begins the process of transcription, unwinding the DNA and synthesizing an RNA molecule that is complementary to the DNA template strand. Therefore, RNA polymerase is the enzyme that binds to DNA during initiation.

    Rate this question:

  • 3. 
    During elongation RNA polymerase starts building single-stranded mRNA in the direction 3' to 5'. - ProProfs

    During elongation RNA polymerase starts building single-stranded mRNA in the direction 3' to 5'.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    It builds from 5' to 3'

    Rate this question:

  • 4. 

    The region of DNA which RNA polymerase binds to is known as the _______________ region.

    Correct Answer
    promoter
    Explanation
    The region of DNA where RNA polymerase binds is known as the promoter. The promoter plays a crucial role in initiating the transcription process by providing a binding site for RNA polymerase. It contains specific DNA sequences that serve as recognition sites for the RNA polymerase enzyme, allowing it to attach and initiate the transcription of the DNA into RNA. The promoter region is essential for regulating gene expression as it determines when and how often a particular gene is transcribed.

    Rate this question:

  • 5. 

    Exons are removed by spliceosomes.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Introns are removed by spliceosomes because they are a non-coding region of a gene. Exons are a coding region of a gene.

    Rate this question:

  • 6. 

    The promoter region consists mostly of _____________________ bonds.

    • Cytosine-Guanine

    • Adenine-Thymine

    • Adenine-Uracil

    Correct Answer
    A. Adenine-Thymine
    Explanation
    Adenine-Thymine bonds are held together by 2 hydrogen bonds, whereas cytosine-guanine bonds are held together by 3 hydrogen bonds. Therefore less energy is needed to open the double helix by breaking only 2 bonds.

    Rate this question:

  • 7. 
    A 5' cap and a Poly-A tail must be added to the primary transcript to help protect it from what? - ProProfs

    A 5' cap and a Poly-A tail must be added to the primary transcript to help protect it from what?

    • Digestion by the nucleus and degradation later on

    • Becoming tRNA

    • Getting duplicated

    Correct Answer
    A. Digestion by the nucleus and degradation later on
    Explanation
    The primary transcript, which is the initial RNA molecule synthesized from DNA, needs a 5' cap and a Poly-A tail to protect it from digestion by the nucleus and degradation later on. These modifications prevent the RNA molecule from being recognized and broken down by cellular enzymes. Without these protective measures, the primary transcript would be vulnerable to degradation, leading to the loss of important genetic information.

    Rate this question:

  • 8. 

    A _____________ sequence is a specific series of bases that sends a signal to RNA polymerase to stop transcribing.

    Correct Answer
    terminator
    Explanation
    A terminator sequence is a specific series of bases that signals RNA polymerase to stop transcribing. This sequence acts as a signal to indicate the end of the gene or segment being transcribed. Once the terminator sequence is reached, RNA polymerase detaches from the DNA template and releases the newly synthesized RNA molecule. This termination process is crucial for accurately transcribing genes and ensuring the proper functioning of the genetic code.

    Rate this question:

Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 22, 2010
    Quiz Created by
    Karyntaylor
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.