ZuoTi.Pro
Question

17) Once a protein binds to DNA at a specific site a) Transcription may be blocked b) RNA polymerase may bind more efficientl
science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer-

Once a protein binds to DNA at a specific site e) all of these choices may result.

Proteins are of different types. Some proteins act as enhancer or activator, while others act as inhibitors. To start transcription process, RNA polymerase requires some other transcription factors; such as TFIID, TFIIA, TBP, TFIIB. These proteins bind to specific sequence of DNA to recruit RNA polymerase and then transcription process starts.

There are some inhibitor proteins called repressor or silencers which bind to the upstream region of promoter complex of DNA to inactivate transcription process. Rate of transcription can also be increased by the binding of upstream activator sequence or enhancers. These all factors are proteins.

0 0
Add a comment
Know the answer?
Add Answer to:
17) Once a protein binds to DNA at a specific site a) Transcription may be blocked...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Suppose there is a protein "A" which binds to a DNA sequence and increases transcription of...

    Suppose there is a protein "A" which binds to a DNA sequence and increases transcription of the gene CBC23. In the presence of molecule "C", protein "A" changes structure and can no longer bind to the DNA sequence, resulting in reduced transcription of CBC23. What terms describe "A" and "C" respectively? Enhancer and activator Repressor and Effector Effector and activator   Activator and enhancer Polymerase and activator Activator and effector

  • Which of the following correctly describes eukaryotic transcriptional control?        a. A transcription factor is a...

    Which of the following correctly describes eukaryotic transcriptional control?        a. A transcription factor is a DNA molecule that helps RNA polymerase to bind to the enhancer of a specific gene.        b. An enhancer is a protein that encourages gene expression by binding to the DNA.        c. The promoter is the region of RNA where DNA polymerase will bind to begin transcription.        d. The interaction of multiple transcription factors may be required in order to transcribe a...

  • 1. this proteins is responsible for increasing or decreasing supercoiling of DNA A. Helicase B. DNA...

    1. this proteins is responsible for increasing or decreasing supercoiling of DNA A. Helicase B. DNA Polymerase C. Topoisomerase D. RNA Polymerase E. DNA ligase 2. a gene is best defined as A. A segment of DNA that contains inherited information that defines the structure of a protein or RNA B. thee nucleotides that code for an amino acid C. a translated unit of DNA D. a sequence of nucleotides in RNA that codes for a functional product 3. This...

  • A protein binds a DNA sequence downstream of a promoter. This results in an increased rate...

    A protein binds a DNA sequence downstream of a promoter. This results in an increased rate of transcription of the gene. Which of the following site is likely to be attached? a. Operon b. Terminator c. Activator binding site d. Promotor The following are produced by algae To prepare the insert for the gene cloning, you need to find a proper source of the DNA fragment. PCR is one of the most common ways to get the gene that you...

  • Question 1 Match the term with the best definition or description; most topics relate to the...

    Question 1 Match the term with the best definition or description; most topics relate to the regulation of gene expression. General type of protein which will increase transcription rates when it attaches to a site A. Factor connected to a particular gene - B. Co-repressor C. Enhancer D. Promoter E. Structural F. Intron G. Activator H. Operator I. Basal transcription J. Glucocorticoid receptor K. Sigma factor L. Mediator M. Inducer N. TATA box O. Repressor The rates of mRNA produced...

  • When a stop codon is in place at the ribosomal A site, a ________________ factor binds...

    When a stop codon is in place at the ribosomal A site, a ________________ factor binds to the site instead of a new aminoacyl-tRNA. List two specific causes of DNA mutations. One of the ways chromatin remodeling occurs to allow gene expression is ____________________ of ______________ residues of histones. During translation, elongation factors EF-Tu and EF-G use hydrolysis of the energy molecule  ________ to successfully complete their tasks The __________________________________ sequence is a consensus sequence (in prokaryotic mRNAs only) that signals...

  • 15. The term that describes the directionality of the two strands in DNA Is A antidirectional...

    15. The term that describes the directionality of the two strands in DNA Is A antidirectional B polydirectional Csemiparallel D. antiparallel E ntisequencial 16. Which of the following enzymes synthesis new DNA during DNA replication? ADNA primase B. RNA polymerase CONA polymerase D Helicase E DNA ligase 17. Which of the following enzymes generates a covalent bond between Okazaki fragments? A DNA primase B. RNA polymerase C DNA polymerase D Helicase E. DNA ligase strand. 18. During DNA replication Okazaki...

  • region is a DNA sequence that regulates transcription. Within a gene, a region is a DNA...

    region is a DNA sequence that regulates transcription. Within a gene, a region is a DNA sequence that encodes RNA and a o coding, barcoding o control, coding o noncoding, control o coding, control During transcription, the DNA template is read in the ___direction. o 3 to 5 oC to N terminal ON to C terminal 0 5' to 3' For genes encoding protein, which of the following is the eukaryotic consensus sequence of the promoter? ATAT o GCGC CGCG...

  • Transcription is the process of rewriting DNA. DNA molecules are made from 4 different nucleotides which...

    Transcription is the process of rewriting DNA. DNA molecules are made from 4 different nucleotides which acts as building blocks. These building blocks are adenine, thymine, guanine and cytosine. When put together in different chemical combinations they become directions for the functions of the cell molecules which are primarily proteins. When a certain protein is needed, the RNA polymerase enzyme will find the gene for that particular protein and makes an RNA copy of it. DNA and RNA have similar...

  • 8. In transcription, A) mRNA is synthesized from DNA B) the starting point of synthesis is...

    8. In transcription, A) mRNA is synthesized from DNA B) the starting point of synthesis is the promoter site C) RNA polymerase binds to the promoter during initiation D) the ending point of synthesis is the terminator site E) All of the above The tryptophan (trp) operon is actively transcribed (i.e. gene expression occurs) A) when there is excess tryptophan in the cell. B) when there is a lack of tryptophan in the cell. C) constitutively because the trp operon...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT