In bacteria, single polycistronic MRNA encodes for:a single mRNA which is split into multiple mRNAs before translation.a single enzyme although there are many in the metabolic pathway.a single peptide with multiple catabolic sites.multiple enzymes of the particular pathway.

Name: In bacteria, single polycistronic MRNA encodes for:a single mRNA whic
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Description: In bacteria, single polycistronic MRNA encodes for:a single mRNA which is split into multiple mRNAs before translation.a single enzyme although there are many in the metabolic pathway.a single peptide with multiple catabolic sites.multiple enzymes o

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Biology

In bacteria, single polycistronic MRNA encodes for:

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter13: Gene Expression

Section: Chapter Questions

Problem 11TYU

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Polypeptides can be reversed back to RNA because of the enzyme transcriptase. The genetic material must be replicated with high fidelity and great speed. Eukaryotic mRNA is said to be polycistronic since they encode multiple polypeptide chains RNA-synthesis occurs inside the nucleus while protein synthesis in the cytoplasm of eukaryotic organisms. Write T if the statement is true and write F if the statement is false
Which of the following is observed in prokaryotes but not in eukaryotes? O In prokaryotes, ribosomes move along an mRNA in the 3' to 5' direction. An MRNA can be translated by only one ribosome at a time in eukaryotes. Translation does not require any protein factors in prokaryotes. TCC is an example of a stop codon only found in prokaryotic mRNA. An MRNA can be translated by only one ribosome at a time in prokaryotes. The 5' end of a prokaryotic MRNA can be translated while the 3' end is still being transcribed.
Protein synthesis in eukaryotes is similar to the process in prokaryotes in that both eukaryotes and prokaryotes: have introns use methionine as the "start" amino acid use codons to determine polypeptide sequences
Put the following events involved with protein synthesis in order. Move first event to the top of the list and finishe with the last event. The anticodon of the second tRNA binds at the A site; peptidyl transferase catalyzes a reaction to join the two amino acids together. The stop codon is reached on the mRNA; no tRNA binds, the ribosomes and polypeptide are released. Ribonucleotides are added by RNA polymerase creating a single strand of mRNA. ⠀ The DNA double helix is unwound beginning at the promoter sequence. A 5' cap and 3' poly A tail are added to the mRNA The polypeptide undergoes folding and further modifications, if needed. The ribosome shifts one codon down, opening up its A site. The next tRNA binds. The larger ribosomal unit clamps down on the tRNA carrying MET. The mRNA leaves the nucleus. The 5' cap binds to the small ribosomal unit, leading to the exposure of the start codon; the first tRNA carrying MET binds. :: #10 #
Which of the following is observed in prokaryotes but not in eukaryotes? An mRNA can be translated by only one ribosome at a time in prokaryotes. The 5´ end of a prokaryotic mRNA can be translated while the 3´ end is still being transcribed In prokaryotes, ribosomes move along an mRNA in the 3´ to 5´ direction. UGG is an example of a stop codon only found in prokaryotes.
Which of the following is true of the timing of RNA processing? The premise is false; mRNA processing does not occur in eukaryotes mRNA processing occurs in the cytosol after pre-mRNA is exported from the nucleus mRNA processing occurs co-transcriptionally mRNA processing occurs in the nucleus after transcription has terminated
Which would have the most serious effect on polypeptide product?
Which of the following types of mutation that changes the mRNA sequence after the codon that initiates translation is likely to have the most detrimental effect on the polypeptide product? Group of answer choices a substitution of the first nucleotide of a GGG codon a substitution of the third nucleotide in an ACC codon an insertion of a codon a deletion of two nucleotides a deletion of a codon
Which of the following cannot be said regarding aminoacyl tRNA synthetase? It is essential for the correct reading of codons. A single tRNA synthetase can attach different amino acids to their corresponding tRNA. It is first activated when it catalyzes a reaction between ATP and an amino acid to form an aminoacyladenylic acid (amino acyl-AMP). It is responsible for the attachment of the correct amino acid to the correct tRNA. There is a different tRNA synthetase for each amino acid that will be attached to a tRNA.
Which of the following statements about translation is false? In eukaryotes, the 5' cap and the 3' poly(A) tail are involved in translation initiation. Peptidyl-transferase activity during translation is the property of a ribozyme. A base at the first position of an anticodon on the tRNA would pair with a base at the third position of the mRNA. The growing peptide chain is transferred from the tRNA in the P site to the tRNA in the A site. Ribosomes move along an mRNA in the 3’ → 5' direction.
Which of the following five processes are points of regulation for controlling enzyme-mediated reactions? Select 5 correct answer(s) Dihydrolipidation of arginine Disulfide bond acetylation Protein targeting RNA processing Cytosine methylation Proteolytic processing Protein degradation
At least three types of RNA are required for protein synthesis. Compare and contrast mRNA, rRNA, and tRNA by moving the descriptions of their structure and function to the appropriate categories. Some phrases may describe all three types of RNA. mRNA in eukaryotes, can exist outside the nucleus acts as an enzyme for peptide synthesis composed of ribonucleic acid rRNA Answer Bank moves amino acids to the site of protein synthesis tRNA contains nucleotide triplets that code for specific amino acids has a convoluted structure with a three-base sequence called an anticodon moves genetic information out of the nucleus and into the cytoplasm mRNA, rRNA, and tRNA