Which of the following is always true of ribosomes?The small ribosomal subunit is composed of only rRNA, while the large ribosomal subunit is composed of both FRNA and protein.A During translation elongation, new tRNAS enter at the A site, then the growing polypeptide is catalytically added to the amino acid on the newly entered tRNA.I.During translation elongation, TRNAS enter at the P site, then transfer polypeptides to a new tRNA in the E site,IlI.Ribosomes are not able to synthesize ribosomal proteins.O V.During translation Initiation, the first TRNA (methionyl TRNA) is located in the A site when the large subunit associates with the small subunit.V.

Ribosomes are macromolecular machines that perform biological protein synthesis and are found in all…

Which of the following is always true of ribosomes? The small ribosomal subunit is composed of only rRNA, while the large ribosomal subunit is composed of both rRNA and protein. 1. During translation elongation, new tRNAS enter at the A site, then the growing polypeptide is catalytically added to the amino acid on the newly entered tRNA. During translation elongation, TRNAS enter at the P site, then transfer polypeptides to a new TRNA in the E site. O I. y Ribosomes are not able to synthesize ribosomal proteins. During translation initiation, the first tRNA (methionyl RNA) is located in the A site when the large subunit associates with the small subunit.

Which of the following is always true of ribosomes? The small ribosomal subunit is composed of only rRNA, while the large ribosomal subunit is composed of both rRNA and protein. 1. During translation elongation, new tRNAS enter at the A site, then the growing polypeptide is catalytically added to the amino acid on the newly entered tRNA. During translation elongation, TRNAS enter at the P site, then transfer polypeptides to a new TRNA in the E site. O I. y Ribosomes are not able to synthesize ribosomal proteins. During translation initiation, the first tRNA (methionyl RNA) is located in the A site when the large subunit associates with the small subunit.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter15: From Dna To Protein

Section: Chapter Questions

Problem 1TYK: Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a...

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Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.
Given the following tRNA anticodon sequence, derive the mRNA and the DNA template strand. Also, write out the amino acid sequence of the protein encoded by this message. tRNA: UAC UCU CGA GGC mRNA: protein: How many hydrogen bonds would be present in the DNA segment?
Given the following mRNA, write the double-stranded DNA segment that served as the template. Indicate both the 5 and the 3 ends of both DNA strands. Also write out the tRNA anticodons and the amino acid sequence of the protein encoded by the mRNA message. DNA: mRNA: 5-CCGCAUGUUCAGUGGGCGUAAACACUGA-3 protein: tRNA:
Briefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNA
what is the first event to take place in translation in eukaryotic cell? a. An clongation of the polypeptide chain by the addition of amino acids b. Binding of the larger ribosomal subunits to the smaller ribosomal subunits c. Base pairing of activated methionine-tRNA to AUG of messenger RNA d. The small subunits of ribosome recognizing and attaching to 5' cap of mRNA
Which of the following are stages of translation? Select all that apply. A. A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. B. As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. C. When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. D. Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. E. The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.
Which of the following statements best describes the initiation of translation? A) The large and small ribosomal subunits scan the mRNA in the 3'–5' direction until the promoter is reached. B) A tRNA with the anticodon, AUG, enters the ribosomal complex and binds to the mRNA at the A site. C) The mRNA containing the start codon, AUG, sits at the P site and forms a complex with the corresponding tRNA, and the large and small ribosomal subunits. D) The mRNA attaches to the large ribosomal subunit and once the start codon reaches the A site, the tRNA binds and the small subunit completes the complex.
Which of the following are stages of translation? Select all that apply. a.As the ribosome moves from codon to codon, amino acids brought by successive tRNAs to the ribosome form a growing polypeptide. b.A tRNA binds to the second codon and its carried amino acid forms a peptide bond with methionine. c.When the ribosome reaches a stop codon, its subunits detach, and the mRNA and new polypeptide are released. d.Ribosomal subunits and a tRNA carrying methionine converge on the start codon of an mRNA. e.The binding of a tRNA to the third codon causes the ribosome to release the first tRNA and move to the next codon.
1.1 What is the best description of a Ribosome? a. An enzyme that uses ribose to synthesize amino acids b. A protein/RNA complex that synthesizes protein c. A ribozyme that uses RNA as an enzyme to directly ligate free amino acids to tRNAs d. A multi-subunit protein complex that charges tRNA with amino acids 1.2 In RNA processing? A. Exons are added to the ends of mRNA for protection B. Intron sequences are removed before the mRNA is translated C. The RNA transcript that leaves the nucleus may be much longer than the original primary transcript D. All RNA transcripts will be processed and leave the nucleus.
Which of the following best describes tRNA? a. Provides the instructions for the amino acid sequence of a polypeptide b. Complexes with ribosomal proteins to form ribosomes c. Used for eukaryotic RNA processing d. Transports amino acids to ribosomes during translation
Discuss why you think the ribosomes need to contain so many proteins and rRNA molecules. Does it seem like a waste of cellular energy to make such a large structure so that translation can occur?
If you were able to watch a ribosome move along a mRNA by one codon, which of the following would you most likely oberve? Group of answer choices The tRNA that was in the E site moves to the P site and is released. The tRNA that was in the A site moves into the E site. The tRNA that was in the A site departs from the ribosome. The tRNA that was in the P site moves to the E site and is released. The tRNA that was in the P site moves into the A site.