Transcription producesO proteins from RNA.O proteins from DNA.DNA from RNA.O RNA from DNA.Question 6An operator is found withinO the operon which help to regulate gene expression in bacteria.the operon which is responsible for DNA replication in bacterial species.O the DNA replication process for bacterial species and initiates replication.eukaryotic organisms and controls the production of proteins.

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Description: Transcription producesO proteins from RNA.O proteins from DNA.DNA from RNA.O RNA from DNA.Question 6An operator is found withinO the operon which help to regulate gene expression in bacteria.the operon which is responsible for DNA replication in bac

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Transcription produces O proteins from RNA. O proteins from DNA. DNA from RNA. O RNA from DNA.

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter10: Control Of Gene Expression

Section: Chapter Questions

Problem 2SQ: Binding or ___ to ___ in DNA can increase the rate of transcription of specific genes. a....

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Antibiotics and Protein Synthesis Antibiotics are molecules produced by microorganisms as defense mechanisms. The most effective antibiotics work by interfering with essential biochemical or reproductive processes. Many antibiotics block or disrupt one or more stages in protein synthesis. Some of these are mentioned here. Tetracyclines are a family of chemically related compounds used to treat several types of bacterial infections. Tetracyclines interfere with the initiation of translation. The tetracycline molecule attaches to the small ribosomal subunit and prevents binding of the tRNA anticodon during initiation. Both eukaryotic and prokaryotic ribosomes are sensitive to the action of tetracycline, but this antibiotic cannot pass through the plasma membrane of eukaryotic cells. Because tetracycline can enter bacterial cells to inhibit protein synthesis, it will stop bacterial growth, helping the immune system fight the infection. Streptomycin is used in hospitals to treat serious bacterial infections. It binds to the small ribosomal subunit but does not prevent initiation or elongation; however, it does affect the efficiency of protein synthesis. Binding of streptomycin changes the way mRNA codons interact with the tRNA. As a result, incorrect amino acids are incorporated into the growing polypeptide chain, producing nonfunctional proteins. In addition, streptomycin causes the ribosome to randomly fall off the mRNA, preventing the synthesis of complete proteins. Puromycin is not used clinically but has played an important role in studying the mechanism of protein synthesis in the research laboratory. The puromycin molecule is the same size and shape as a tRNA/amino acid complex. When puromycin enters the ribosome, it can be incorporated into a growing polypeptide chain, stopping further synthesis because no peptide bond can be formed between puromycin and an amino acid, causing the shortened polypeptide to fall off the ribosome. Chloramphenicol was one of the first broadspectrum antibiotics introduced. Eukaryotic cells are resistant to its actions, and it was widely used to treat bacterial infections. However, its use is limited to external applications and serious infections. Chloramphenicol destroys cells in the bone marrow, the source of all blood cells. In bacteria, this antibiotic binds to the large ribosomal subunit and inhibits the formation of peptide bonds. Another antibiotic, erythromycin, also binds to the large ribosomal subunit and inhibits the movement of ribosomes along the mRNA. Almost every step of protein synthesis can be inhibited by one antibiotic or another. Work on designing new synthetic antibiotics to fight infections is based on our knowledge of how the nucleotide sequence of mRNA is converted into the amino acid sequence of a protein. Questions Why are antibiotics ineffective in treating the common cold and other virus infections?
Binding or ___ to ___ in DNA can increase the rate of transcription of specific genes. a. activators; repressors b. activators; enhancers c. repressors: operators d. repressors: enhancers
Which of the following is true about RNA synthesis?a) Synthesis of RNA is always in the 5’ to 3’ directionb) RNA polymerase requires a primer for initiating transcriptionc) U is inserted opposite T in transcriptiond) New nucleotides are added on the 2’-OH of the ribose sugar
A pre-initation complex (PIC) is required for transcription to begin. State which TFII protein has catalytic function.
The assembly of transcription factors on a promoter begins some 25 nucleotides upstream where it binds to a start _______________ sequence Group of answer choices TAAT ATTA TATA ATGC
I've attached the table of transcription ans translation for a DNA and Bees work, Genes A and B are exons while C is an intron. Gene A has a silent mutation and Gene B has a nonsense mutation. Please answer the below for me The 3 genes code for different proteins: • Gene A = protein essential for stinger • Gene B = DNA replication enzyme • Gene C = fuzzy hair protein Do you think it matters which protein is mutated? Is one protein more important than another? How would you try to help the bees stay healthy using the information from the mutations?
The promoter of an operon is the site to which RNApolymerase binds to begin transcription. Certain basechanges in the promoter result in a mutant site towhich RNA polymerase cannot bind. Would you expect mutations in the promoter that prevent binding ofRNA polymerase to act in trans on another copy ofthe operon on a plasmid in the cell, or only in cis onthe copy immediately adjacent to the mutated site?
Where does RNA polymerase bind DNA?a) Promoterb) Operatorc) Enhancerd) None
When he sell requires a production of the specific proteins what steps must occur The gene must undergo transcription and then codons Will be a tractive together during translation The gene was be replicated and then translated to produce RNA The gene must first be transcribed and then to our must be translated The gene must first be translated and then the RNA must be transribed
Just as DNA methylation decreases gene expression and DNA acetylation increases gene expression, is there a simple explanation for what DNA phosphorylation does? Is the answer that it depends? I've seens sources online that says DNA methylation increases, others say decrease so I am a bit confused. Thanks in advance!
DUE IN 30 MINUTES. Thank you! A section of DNA has following sequence of nitrogenous bases: CGATTACAG. Which of the following sequences would be produced as a result of transcription?
34.. heterochromatic regions decondense for gene expression a. pre-transcriptional controlb. transcriptional controlc. translational controld. post-translational control