BIOD 102 Biology II Module 1 Exam Portage Learning Questions and Answers 2024/25 (Verified, Exams of Biology

Download BIOD 102 Biology II Module 1 Exam Portage Learning Questions and Answers 2024/25 (Verified and more Exams Biology in PDF only on Docsity! Correct! Fals e Tru e True or False. Replication of DNA begins at a single origin of replication and then proceeds the entire length of the strand, in one direction. 2 / 2 ptsQuestion 1 Match each term with the correct definition. Correct! origin of replication 6 / 6 ptsQuestion 2 area encoded with a star BIOD 102 Biology II Module 1 Exam Portage Learning Questions and Answers 2024/25 (Verified Answers) Due No due date Points 100 Questions 40 Time Limit 120 Minutes Requires Respondus LockDown Browser Attempt History Attempt Time Score KEPT Attempt 2 83 minutes 87.5 out of 100 LATEST Attempt 2 83 minutes 87.5 out of 100 Attempt 1 60 minutes 65 out of 100 Score for this quiz: 87.5 out of 100 Submitted Jul 15 at 10:59am This attempt took 83 minutes. Correct! helicase Correct! replication fork Correct! replication bubble Correct! single stranded binding protein Correct! topoisomerase enzyme that breaks hydr functions as a wedge to k visible region, ahead of t visible, ‘Y’-shaped area; p enzyme that untwists DN Topoisomerase Your Answer: helicase What enzyme is responsible for relieving the stress associated with the twisting and untwisting of a DNA strand during replication? 0 / 2 ptsQuestion 3 Multiple Choice: 2 / 2 ptsQuestion 4 ou Answered RNA primase Correct! False True True or False. Mismatch repair is the process of identifying nucleotides that are inappropriately matched, such as a guanine with a thymine, and removes the incorrect nucleotide from the newly synthesized strand. 3 / 3 ptsQuestion 10 Question 9 2 / 2 pts (short answer) A class of DNA polymerase patrols newly added nucleotides and will remove nucleotides that are erroneous. How does the polymerase “know” a nucleotide is misplaced? Your Answer: DNA replication involved incorporation of incoming nucleotides at the 3' hydroxy end of the growing chain. DNA replication is carried out by DNA polymerase enzyme and has the ability to proofread the incorporated nucleotides. If incorporation is incorrect the nucleotide will result in slow replication fork which is a signal to initiate DNA repair. which removes incorrect nucleotoides. Newly added nucleotides are compared to the complementary template strand. Correct! False True True or False. Mismatch repair mechanism is useful for removing entire stretches of mismatched DNA from a newly synthesized strand. 2 / 2 ptsQuestion 11 Correct! primases polymerases ligases nucleases Multiple Choice: Nucleotide excision repair (cutting DNA) is accomplished by the following enzyme: 2 / 2 ptsQuestion 12 (short answer) The lagging strand gets shorter with each replication. Why can’t DNA polymerase simply tack on the necessary nucleotides? Your Answer: 1.5 / 3 ptsQuestion 13 Correct Answer sequence of genetic information Correct! phenotype Correct! transcription Correct! translation process of interpreting m process of synthesizing R observable characteristi The process of synthesizing mRNA from a DNA template; first step of protein synthesis Your Answer: Information on the strand of the DNA is copied into a new moleculr of messenger RNA (mRNA). there are 4 steps, initiation, elongation, termination and processing. (short answer) Define what the process of transcription is. 2 / 2 ptsQuestion 18 Multiple Choice: bases encode fordifferent amino acids. 2 / 2 ptsQuestion 19 Correct! 4;20 5;30 4;30 3;20 Correct! proteins amino acids mRNA DNA Multiple Choice: is read in a triple code reading frame. 3 / 3 ptsQuestion 20 Match each term with the correct definition: Correct! Promoter region Correct! TATA box 5 / 5 ptsQuestion 21 DNA sequence of eukary A control sequence that Correct! RNA polymerase Correct! Transcription factors Correct! Transcription initiation complex Combination of transcrip Assists RNA polymerase Enzyme that separates D Correct! False True True or False. The TATA box is necessary for initiation of transcription and is located on the DNA strand. 2 / 2 ptsQuestion 22 Multiple Choice: Which of the following is responsible for converting a DNA strand into RNA? DNA polymerase transcription factors Correct! RNA polymerase none of the above 2 / 2 ptsQuestion 23 Correct! P-site Correct! A-site Correct! Exit tunnel releases the completed p holds the tRNA, with the holds the tRNA in place t Because the start codon is AUG (the triplet code for methionine) which signals the start of the coding region. Your Answer: start codon is AUG which is triplet code for methionine and signals start of the coding region Short Answer: Why is the amino acid methionine (met) added at initiation of translation? 2 / 2 ptsQuestion 29 Multiple Choice: Amino acids are added to the: protein N-terminus end 2 / 2 ptsQuestion 30 Correct! C-terminus end Correct! none of the above carbon dioxide water amino acid Multiple Choice: After a stop codon is encountered, the hydrolysis of what molecule aids in releasing the new polypeptide chain? 2 / 2 ptsQuestion 31 unique folding/appropriate structure shape Your Answer: final proteins functional diversity Fill in the blank. Post-translational modifications are necessary to ensure . 0 / 2 ptsQuestion 32 Correct! False True True or False. Some mutations, such as point and substitution types, can occur without changing an organism’s phenotype. 2 / 2 ptsQuestion 34 Correct! Correct! Correct! Correct! Question 33 4 / 4 pts Match the term to the correct definition: control elements non-coding DNA regions proximal control elements located most closely to t distal control elements located farther away fro general transcription associated with low level factors Correct! False True True or False. Different cells in the body have different DNA, and this is why activators and repressors have different effects by cell type. 2 / 2 ptsQuestion 38 Question 39 2 / 2 pts Short Answer: How does alternative splicing differ from intron splicing? Your Answer: Alternative Splicing: Splicing then rejoining different regions of same primary transcript. Intron Splicing: Remove the non-coding region Alternative splicing involves the splicing and rejoining of different regions of the same primary transcript. Each spliced region can be translated into a different protein. Conversely, intron splicing is simply the removal of non-coding regions after transcription intron splicing doesn’t give more than one mRNA to be translated. Question 40 2 / 2 pts Short Answer: How does selective degradation play a role in regulation of gene expression? Your Answer: major pathway of selective protein degradation in wukaryotic cells uses ubiquitin as a marker that targets cytosolic nuclear proteins for rapid proteolysis. Simply put: if proteins are degraded they are not physically present to influence gene expression. Quiz Score: 87.5 out of 100