Practice Questions for Exam 2

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Arizona State University *

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181

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Biology

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Apr 3, 2024

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3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 1/15 Practice Questions for Exam 2 Due Mar 25 at 11:59pm Points 0 Questions 20 Available Mar 21 at 12:42pm - Mar 25 at 11:59pm Time Limit None Instructions These figures below may be useful.

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 2/15

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 3/15 Attempt History Attempt Time Score LATEST Attempt 1 27 minutes 0 out of 0 Score for this quiz: 0 out of 0 Submitted Mar 23 at 10:44pm This attempt took 27 minutes.  Question 1 0 / 0 pts Answer A Answer B Answer C Correct! Answer D  Question 2 0 / 0 pts Which of the following combinations (A-D) accurately describes the directionality of the double stranded DNA fragment below? Select only ONE answer choice. Of the following four 15 base-pair, double-stranded DNA sequences, which will be most stable at higher temperatures? In other words, which will most likely remain in a double-stranded form? Select only ONE answer choice.

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3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 4/15 CATCCTAGCGACTAT CTATACGACATAGCC AAATGCATACATCTT Correct! CCCGCATCGCCATCG  Question 3 0 / 0 pts Correct! Only one strand actually carries the codons for a particular gene. RNA polymerase can read a strand in the 5' to 3' direction to produce the RNA transcript in the correct orientation of 5' to 3'. A gene transcribed in the 5’ to 3’ direction on one strand can be transcribed in the 3’ to 5’ direction on the other strand.  Since the two strands of DNA molecules are complementary, for any given gene:

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 5/15 Question 4 0 / 0 pts Answer A Answer B Correct! Answer C Answer D Answer E  Based on the diagram below, identify: 1. What process does the diagram illustrate? 2. DNA strand type? Coding or Template? 3. DNA strand type? Coding or Template? 4. Directionality of growing nucleic acid at 4? (i.e. 5’ or 3’) Select only ONE answer choice.

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 6/15 Question 5 0 / 0 pts 5’ – UUG CCU GAC CGU – 3’ 5’ – UGA UGC AAG CAG UCC CGU UAC GUU – 3’ 5’ – UUG CAU UGC CCU GAC GAA CGU AGU – 3’ Correct! 5’ – UGC CAG UCC GUU – 3’ None of the above are correct  Question 6 0 / 0 pts Tyr Arg Ser Asp Ser Thr Ser Asp Asp Asp Ser Thr Ser Asp Asp Correct! Met Ser Ser Thr Thr  Question 7 0 / 0 pts Consider the following sequence of bases in DNA that are part of the TEMPLATE STRAND of a gene that codes for a particular mRNA strand. The introns and exons have been indicated in the image below. Nucleotides that are bolded are part of exons; nucleotides that are not bolded are part of introns. Assuming transcription occurs, the sequence of the mRNA transcript ultimately found in the cytoplasm for this sequence of bases would be: Select only ONE answer choice. The nucleotide sequence listed below represents the TEMPLATE STRAND of a gene (assume traditional start codon, no introns). 3' TACAGAAGTTGATGCATC 5' Which of the following is the peptide that is produced when the mRNA is translated? The standard 3- letter abbreviations for amino acids are used. Select only ONE answer choice.

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3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 7/15 Correct! 5ʹ TTT - CTT - ATC - GTA - TAA 3ʹ 3ʹ TTT - CTT - ATC - GTA - TAA 5ʹ 5ʹ AAA - GAA - TAG - CAT - ATT 3’ 3ʹ AAA - GAA - TAG - CAT - ATT 5’  Question 8 0 / 0 pts 18, 18 18, 19 7, 9 Correct! 8, 8  Question 9 0 / 0 pts True A possible sequence of nucleotides in the CODING STRAND of DNA that would code for the polypeptide sequence phe-leu-ile-val would be: (Select only ONE answer choice.) Below is the sequence of a complete mRNA from a yeast cell. 5’-ACUAGCAGGAGACGUAAGCGAUGUGCCAGAUGCGCAGUCACACAUAACUGCAAG-3’ Answer the following two questions: 1. How many amino acids long is the protein? (Assume traditional start codon) 2. How many tRNAs total will play a role in the synthesis of the resulting peptide? Select only ONE answer choice. True or False: Genes code for chromosomes and chromosomes are responsible for the individual traits we observe.

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 8/15 Correct! False  Question 10 0 / 0 pts W, Z X, Y Correct! W, X Y, Z Z, W  Question 11 0 / 0 pts The backbone of this polymer is shown in box ______. The functional group denoted with ______ is necessary for the additIon of the next monomer. Select only ONE answer choice. The figure below depicts a transcript. The (+) sign just indicates any random nucleotide. Which of the tRNA molecules depicted below it are the best match for the third codon? Select only ONE answer choice.

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 9/15 Correct! A B C D None of the above.  Question 12 0 / 0 pts 5’ – TACCGTAATCCCGCAACT – 3’ 5’ – UACCGUAAUCCCGCAACU – 3’ Correct! 5’ – AUGGCAUUAGGGCGUUGA – 3’ None of the above are correct.  Question 13 0 / 0 pts Given the coding strand of DNA below, choose the correct RNA transcript. 5’ – ATGGCATTAGGGCGTTGA – 3’

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3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 10/15 Met-Leu-Lys-Met-Pro-Arg Correct! Met-Leu-Lys-Met-Pro Met-Leu-Lys-Met-Pro-stop-Arg Met-Pro Pro-Met-Lys-Leu-Met  Question 14 0 / 0 pts DNA is double-stranded while RNA is single-stranded. RNA includes Uracil while DNA includes Thymine. DNA has the sugar deoxyribose while RNA has the the sugar ribose. Correct! All of the above are differences between RNA and DNA  Question 15 0 / 0 pts Based on the DNA strand below, and assuming the promoter for this gene is located to the left, which protein sequence below does this sequence code for? (Assume the first nucleotide is the start of the first codon.) Select only ONE answer choice. Which of the following is NOT a difference between DNA and RNA? Select only ONE answer choice. Laura recently isolated a colony of phytoplankton from her fish tank that seem to be found throughout the tank including near the hot lights at the surface (70°F or higher) and at the bottom of the tank in cooler temperatures (70°F or lower).

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 11/15 Correct Answer Comparing Gene 1 and Gene 3, Gene 1 one codes for a more flexible protein and Gene 3 codes for a more rigid protein. You Answered Comparing Gene 2 and Gene 3, Gene 3 codes for a more flexible protein and Gene 2 codes for a more rigid protein. Comparing Gene 1 and Gene 2, Gene 2 codes for a more flexible protein and Gene 1 codes for a more rigid protein.  Laura has a hunch that there is a difference in gene expression between the phytoplankton at the top of the tank and those at the bottom of the tank, with those at the top of the tank producing more rigid proteins and the ones near the bottom of the tank producing more flexible proteins. To test this, Laura incubates members of the phytoplankton colony at 3 different temperatures for several hours (see the figure below). At the end of the incubation period, Laura records the number of RNA transcripts present in the phytoplankton for three genes that she suspects may play a role in allowing these phytoplankton to acclimate to various temperatures. The data are plotted in the graph below. Based on the data Laura collected, which of the following would be the most likely conclusion?

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 12/15 Question 16 0 / 0 pts 1 2 Correct! 3 4  Question 17 0 / 0 pts You Answered G protein-coupled receptor pathway. Correct Answer Enzyme-linked receptor pathway. Which denotes signal transduction? What type of pathway is this?

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3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 13/15 Ion channel pathway.  Question 18 0 / 0 pts Activation of R4H signal transduction. You Answered Activation of gene expression. Suppression of R4H signal transduction. Correct Answer Suppression of gene expression.  Question 19 0 / 0 pts Examine the figure below. If signal molecule 1 binds to its receptor, what would you expect to happen? This amino acid would bind to a cell surface receptor protein. (focus on the R group)

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 14/15 True Correct! False  Question 20 0 / 0 pts DNA repication Transcription An enzyme-linked receptor system. Correct Answer A G-protein coupled receptor system. You Answered What is depicted in the figure below?

3/23/24, 10:45 PM Practice Questions for Exam 2: BIO 181: General Biology I (2024 Spring) https://canvas.asu.edu/courses/170670/quizzes/1392057 15/15 Elongation of translation by EF-G (where the G stands for GTP). Quiz Score: 0 out of 0

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Practice Questions for Exam 2

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