Proteins have a variety of roles. Which role is shared with elaboratelyfolded RNA?Being structural components that maintain cell shape.Being the physical and functional units of inheritance.Serving as reservoirs of xanthine and uric acid.Serving as enzymes and performing reactions.

Proteins are biomolecules that serve diverse functional roles within a cell. Proteins that catalyse…

Answered: Proteins have a variety of roles. Which…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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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.
A codon is: three amino acids on a polypetide that are snipped off by the helicase enzyme sets of nucleotides on the tRNA, opposite the anti-codon sequence an mRNA component that specifies a specific amino acid that which attaches to the mRNA triplet sequence a don that goes with another don the protein that begins transcription by breaking H bonds
Which of the following is NOT true of deoxyribonucleic acid (DNA)? Stores genetic information that can be expressed within a bacterial cell, transferred "vertically" to offspring cells, or "horizontally" to other recipient cells Serves as a template for the transcription of mRNA Each DNA nucleotide contains the sugar ribose, phosphate, and one of the following nitrogenous bases: adenine, uracil, guanine, or cytosine Found as a circular molecule in bacteria, either as chromosomes or plasmids None of the other four answers (all are true of DNA)
Cells contain genetic information Which of the following sentences describes how genetic information is organized and used? O Genes in DNA molecules encode directions for chromosomes: O Chromosomes are organized into strands of RNA O Genes in DNA molecules encode directions for protein production A single gene is composed of multiple chromosomes
What is a gene? What does "base sequence" mean? If the base sequence of a segment of a molecule of DNA is changed, will the base sequence of the mRNA made during transcription be changed? If the base sequence of the mRNA is changed will the sequence of amino acids obtained during translation change? If the primary structure of a protein is changed, will it's function change? If the function of the protein changes, will the organism have a different characteristic? Do introns get read during translation?
A small section of mRNA codons has the following sequence:UGU GGU CAA CCG Some Amino Acids Valine Serine Proline Glycine Arginine Leucine Histidine Cysteine Glutamine The amino acids listed above that are coded by the mRNA codons are Answer, Answer, Answer, and Answer.Record your answer in order from left to right codons.
How can small interfering RNAS (SİRNAS) and micro RNAS (miRNAs) regulate gene expression? Prevent transcription by binding to DNA and inhibiting transcription factors. Prevent transcription by inducing methylation. Prevent translation by binding to mRNA and degrading the MRNA strand. Prevent translation by binding to MRNA and blocking the ribosome.
Which characteristic of mRNA is INCORRECT? Bacterial mRNAs vary in size but usually have about 1000 nucleotides that code for proteins with 300 amino acids. Bacterial mRNA is longer and more modified than that found in Eukaryotes. Before leaving the nucleus, Eukaryote mRNA has to be capped, spliced and had poly (A) tails added making it longer than Bacterial mRNA. The codons produced in Bacterial mRNA are triplets, just as they are in Eukaryotic mRNA.
Which of the following is most likely to cause the LEAST severe phenotype for a protein?: UCU to ACU CUG to CGG UCG to UAG Ala to Asp
As bacterial DNA replicates, a point mutation occurs in which an A nucleotide is changed to a C nucleotide. Although the mutation changes the codon sequence, it does not change the resulting amino acid in the protein. This would best be described as a missense mutation. splicing site mutation. frameshift mutation. nonsense mutation. silent mutation.
The primary structure of a protein is ultimately determined by an MRNA molecule an FRNA molecule O a polymerase enzyme O a DNA gene
Which of the following is not a factor in the lifetime of a protein? ANSWER Ubiquitination Post-translational phosphorylation Enrichment of Pro, Glu, Ser, and Thr in the protein primary sequence N-terminal sequence identity

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Proteins have a variety of roles. Which role is shared with elaborately folded RNA? Being structural components that maintain cell shape. O Being the physical and functional units of inheritance. O Serving as reservoirs of xanthine and uric acid. O Serving as enzymes and performing reactions.

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