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A comprehensive solution set for a biod 210 module 5 exam on the topic of genetics. It covers a wide range of questions testing the student's understanding of fundamental genetic concepts, including dna and rna structure, transcription, translation, genetic code, and more. The detailed explanations and step-by-step solutions offer valuable insights that can help students deepen their knowledge and prepare effectively for similar exams. Structured in a clear and organized manner, making it a useful resource for studying, reviewing, and reinforcing key genetics principles.
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Attempt Time Score LATEST Attempt 1 60 minutes 57 out of 100 Score for this quiz: 57 out of 100 Submitted Nov 18, 2021 at 11:26am This attempt took 60 minutes.
nanswered Consider the following DNA sequence: 3โ-AAC TAC TGT GTA - 5โ a. Write out the complementary RNA sequence, including the 5โ and 3โ. b. Translation starts on which end of the RNA (5โ or 3โ)? c. Identify the start codon in the complementary sequence you wrote in part a. of this question. Question 1 0 / 6^ pts
Matching each term with the correct definition: Correct! (^) Ribosomes Serves as a site for pr Correct! (^) Shelterin complex Protects chromosome Correct! (^) Codon Question 4 10 /^10 pts Because in eukaryotes have ends on their DNA and bacteria is circular at the ends they have to be able to fuse so bacteria is unable to because of the circular shape the DNA unwinds and the nucleosome reforms and the histones proteins is very tightly coupled so new DNA strand can be wrapped up with new histones There is a huge amount of DNA within a eukaryotic cell, and it needs to be stored within a tiny space within the nucleus. Therefore, it is complexed with proteins into chromatin that help to condense it into an extremely compact form. When it is time for DNA replication to occur, the complexes relax due to the proteins dissociating from it. Then as soon as replication is complete at a certain point, the DNA winds around the histone proteins and recondenses.
Define the wobble hypothesis and explain why it is important for the degeneracy in coding. Your Answer: it is third base pair of triplet is less critical than the first two bases. its important for degeneracy coding because only the first two base pairs of a codon are ccritical forbinding to tRNA , the third can wobble so tRNA can recognize more than one triplet to encoe for a specific amino acid Question 5 6 / 6^ pts Three nucleotides tha Correct! (^) Reverse transcription Synthesis of DNA from Correct! (^) Exon mRNA sequences tha
Correct! False True True or False: Once a polymerase is moving forward along a nucleotide chain, the ability to stall and reverse direction if things go wrong is called proofreading. Question 8 2 / 2^ pts Fill in the Blank: In the process of RNA , exons are joined together to make mature mRNA and are removed from the pre-mRNA. Question 9 4 / 4^ pts Correct! (^) False True True or False: A silencer element is always located close to the gene that it affects, but an enhancer element can be far away. Question 7 2 / 2^ pts
nanswered (^) Question 11 0 / 8 pts Question 10 6 /^6 pts How does alternative splicing enhance the diversity of the genetic code? Your Answer: it producing different mature mRNAs from pre-mRNA by linking the exons in a different combination Alternative splicing means that different combinations of introns can be spliced out of a single mRNA, producing multiple different mature mRNAs. Therefore, several proteins can be encoded from the same nucleotide chain. Your Answer: splicing introns splicing; introns
uu AAnnsswweerreedd Match each term with the correct description: Monosome Bacterial mRNA sequ Correct Answer (^) The complex of ribosome subunits + ribosomal proteins. Correct! (^) Elongation factor-G Shifts the ribosome s Correct! (^) Elongation factor-tu Escorts a tRNA to the Question 12 6 /^10 pts
Met-Glu-Ala-Asp-Asp-Stop B. Met-Lys-Ala-Thr-Pro-Stop The sequence needs to be read 5โ to 3โ.
uu AAnnsswweerreedd rrect Answe r False True True or False: The Shine-Delgarno or Kozak sequence is the initiation sequence for translation Question 13 0 / 2^ pts Why is the mRNA of eukaryotes protected much more so than that of bacteria? Question 14 6 / 6^ pts u Answered (^) Shine-Delgarno Correct Answer (^) Bacterial mRNA sequence just upstream of the start codon. Correct! (^) Kozak sequence Eukaryote mRNA seq
True or False: The large subunit of the ribosome is responsible for recognition of the codon sequences as the mRNA comes through the ribosome. It contains both the aminoacyl and the peptidyl sites. u Answered (^) True Question 17 0 / 2^ pts Question 16 3 /^8 pts Why do scientists believe that telomere shortening has a strong correlation with aging? Your Answer: because as you age they get shorter diseases and other things start to happen which comes with older age It is believed that over time, the telomeres are shortened, and eventually, the ends of the chromosomes start to shorten. When a large amount of chromosomal damage occurs, the cell goes into a state of senescence whereby the metabolic function of the cell becomes very inefficient. Some scientists believe that this shortening is associated with the phenotypes that are associated with typical aging.
uu AAnnsswweerreedd rrect Answe False r True True or False: The strand of DNA that is used for making mRNA is known as the template strand. Question 18 0 / 2^ pts Correct! RNA polymerase Aminoacylation Aminase Peptidase The charging of a tRNA so that it can properly interact with an amino acid to bring it to the growing peptidyl chain is called . Question 19 2 / 2^ pts rrect Answer (^) False
nanswered Elongation Your Answer: Fill in the blank: Amino acids are added in the process until an mRNA sequence encodes for a stop codon. Question 23 0 / 2^ pts Quiz Score: 57 out of 100 nanswered rrect Answe False r True True or False: When the polymerase enzyme encounters a wrong base pair, it pauses, reverses direction, and excises the base. Question 22 0 / 2^ pts
