BIOD 210 Module 5 Exam (Latest, 2024-2025) / BIOD210 Module 5 Exam : Portage Learning, Exams of Nursing

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BIOD210 Module 5 Exam/ BIOD 210 Genetics Module

5 Exam/ BIOD210 Genetics Module 5 Exam: Portage

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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. UnansweredUnanswered Question 1 0 / 6 pts Consider the following DNA sequence: 3’-AAC TAC TGT GTA -5’ a. Write out the complementary RNA sequence, including the 5’ and 3’. b. Translation starts on which end of the RNA (5’ or 3’)? c. Identify the start codon in the complementary sequence you wrote in part a. of this question.

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. Question 4^10 / 10^ pts Matching each term with the correct definition: Correct!Correct! Ribosomes (^) Serves as a site for protein translation on the ER surface Correct!Correct! Shelterin complex (^) Protects chromosome ends from degradation Correct!Correct! Codon

Three nucleotides that form the code for an amino acid Correct!Correct! Reverse transcription (^) Synthesis of DNA from a strand of RNA Correct!Correct! Exon (^) mRNA sequences that are coding sequences for protein Question 5^6 / 6^ pts Your Answer: Define the wobble hypothesis and explain why it is important for the degeneracy in coding. 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 7^2 / 2^ pts True or False: A silencer element is always located close to the gene that it affects, but an enhancer element can be far away. True Correct!Correct! False Question 8^2 / 2^ pts 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. True Correct!Correct! False Question 9^4 / 4^ 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.

Your Answer: splicing introns splicing; introns Question 10^6 / 6^ pts Your Answer: How does alternative splicing enhance the diversity of the genetic code? 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. UnansweredUnanswered Question 11 0 / 8 pts

A.

Met-Glu-Ala-Asp-Asp-Stop B. Met-Lys-Ala-Thr-Pro-Stop The sequence needs to be read 5’ to 3’. Question 12^6 / 10^ pts Match each term with the correct description: You AnsweredYou Answered Monosome (^) Bacterial mRNA sequence just upstream of the start codo The complex of ribosome subunits + ribosomal proteins. Correct AnswerCorrect Answer Elongation factor-G Shifts the ribosome subunits to move the peptide chain. Correct!Correct! Elongation factor-tu Escorts a tRNA to the aminoacyl site on the ribosome. Correct!Correct!

Shine-Delgarno The complex of ribosome subunits + ribosomal proteins. You AnsweredYou Answered Bacterial mRNA sequence just upstream of the start codon. Correct AnswerCorrect Answer Kozak sequence Eukaryote mRNA sequence of A or G upstream of initiatio Correct!Correct! Question 13^0 / 2^ pts True or False: The Shine-Delgarno or Kozak sequence is the initiation sequence for translation True You AnsweredYou Answered False Correct AnswerCorrect Answer Question 14^6 / 6^ pts Why is the mRNA of eukaryotes protected much more so than that of bacteria?

Question 16^3 / 8^ pts Your Answer: Why do scientists believe that telomere shortening has a strong correlation with aging? 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. Question 17^0 / 2^ pts 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. True You AnsweredYou Answered

Correct AnswerCorrect Answer False Question 18^0 / 2^ pts True or False: The strand of DNA that is used for making mRNA is known as the template strand. True Correct AnswerCorrect Answer False You AnsweredYou Answered Question 19^2 / 2^ pts 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 ________. Peptidase Aminase Aminoacylation Correct!Correct! RNA polymerase

UnansweredUnanswered Question 22 0 / 2 pts True or False: When the polymerase enzyme encounters a wrong base pair, it pauses, reverses direction, and excises the base. Correct AnswerCorrect Answer True False Question 23^0 / 2^ pts Your Answer: UnansweredUnanswered Fill in the blank: Amino acids are added in the _________ process until an mRNA sequence encodes for a stop codon. Elongation Quiz Score: 57 out of 100