Microbiology with Diseases by Body System - With Access (Custom)
4th Edition
ISBN: 9781269950060
Author: BAUMAN
Publisher: PEARSON
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Chapter 7, Problem 12CT
Hydrogen bonds between complementary
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One strand of a double-helical DNA has the sequence (5′)GCGCAATATTTCTCAAAATATTGCGC(3′). Write the base sequence of the complementary strand. What special type of sequence is contained in thisDNA segment? Does the double-stranded DNA have the potential to form any alternative structures?
Why is it unfavorable for RNA molecules to adopt a double-helix structure similar to B-DNA?
Because it is entropically unfavorable
Because that would cause a steric clash between the sugars and nucleobases
Because that would cause a steric clash between the 2' OHs of the sugars and the phosphates
Because uracil can't form hydrogen bonds with any other nucleobases
Using the straight-chain sugar convention where the vertical lines represent sugars and the diagonals are phosphodiester bonds, choose the correct structure of the DNADNA strand that encoded this short stretch of RNA.
pppApCpUpGpGpCpApA−OH
Chapter 7 Solutions
Microbiology with Diseases by Body System - With Access (Custom)
Ch. 7 - DNA replication requires a large amount of energy,...Ch. 7 - Vibrio vulnificus Infection Greg enjoyed Floridas...Ch. 7 - Prob. 2TMWCh. 7 - Prob. 3TMWCh. 7 - Why is the genetic ancestry of microbes much more...Ch. 7 - Prob. 1CCSCh. 7 - Which of the following is most likely the number...Ch. 7 - Which of the following is a true statement...Ch. 7 - A plasmid is ___________. a. a molecule of RNA...Ch. 7 - Prob. 4MC
Ch. 7 - Prob. 5MCCh. 7 - Which of the following molecules functions as a...Ch. 7 - Prob. 7MCCh. 7 - Prob. 8MCCh. 7 - The Ames test ___________. a. uses auxotrophs and...Ch. 7 - Which of the following methods of DNA repair...Ch. 7 - Prob. 11MCCh. 7 - Prob. 12MCCh. 7 - Which of the following statements is true? a....Ch. 7 - Prob. 14MCCh. 7 - Although two cells are totally unrelated, one cell...Ch. 7 - Prob. 16MCCh. 7 - Prob. 17MCCh. 7 - Prob. 18MCCh. 7 - Prob. 19MCCh. 7 - Prob. 20MCCh. 7 - Prob. 21MCCh. 7 - Prob. 22MCCh. 7 - Prob. 23MCCh. 7 - Before mutations can affect a population...Ch. 7 - Prob. 25MCCh. 7 - Fill in the Blanks 1. The three steps in RNA...Ch. 7 - Fill in the Blanks 2. A triplet of mRNA...Ch. 7 - Fill in the Blanks 3. Three effects of point...Ch. 7 - Fill in the Blanks 4. Insertions and deletions in...Ch. 7 - Fill in the Blanks 5. An operon consists of...Ch. 7 - Prob. 6FIBCh. 7 - Prob. 7FIBCh. 7 - Fill in the Blanks 8. A gene for antibiotic...Ch. 7 - Fill in the Blanks 9. ______ are nucleotide...Ch. 7 - Fill in the Blanks 10. ____________ is a...Ch. 7 - Fill in the Blanks 11.________ RNA carries amino...Ch. 7 - Fill in the Blanks 12. ______ RNA and ______ RNA...Ch. 7 - How does the genotype of a bacterium determine its...Ch. 7 - List several ways in which eukaryotic messenger...Ch. 7 - Compare and contrast intrans and exons.Ch. 7 - Polypeptide synthesis requires large amounts of...Ch. 7 - Describe the operon model of gene regulation.Ch. 7 - Prob. 6SACh. 7 - Prob. 7SACh. 7 - Describe the formation and function of mRNA, rRNA,...Ch. 7 - Prob. 9SACh. 7 - Explain the central dogma of genetics.Ch. 7 - Compare and contrast the processes of...Ch. 7 - Fill in the following table:Ch. 7 - On the figure below, label DNA polymerase I, DNA...Ch. 7 - Prob. 2VICh. 7 - The drugs ddC and AZT are used to treat AIDS....Ch. 7 - Prob. 1CTCh. 7 - A scientist uses a molecule of DNA composed of...Ch. 7 - Explain why an insertion of three nucleotides is...Ch. 7 - How could scientists use siRNA to turn off a...Ch. 7 - Prob. 5CTCh. 7 - Prob. 6CTCh. 7 - Prob. 7CTCh. 7 - Prob. 8CTCh. 7 - Corynebacterium diphtheriae, the causative agent...Ch. 7 - Prob. 10CTCh. 7 - The endosymbiotic theory states that mitochondria...Ch. 7 - Hydrogen bonds between complementary nucleotides...Ch. 7 - On average, RNA polymerase makes one error for...Ch. 7 - We have seen that wobble makes the genetic code...Ch. 7 - If a scientist synthesizes a DNA molecule with the...Ch. 7 - What DNA nucleotide triplet codes for codon UGU?...Ch. 7 - Suppose you want to insert into your dog a gene...Ch. 7 - Using the following terms, fill in the following...
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- DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?arrow_forwardWhy do you think it is important that the sugar-phosphate backbone of DNA be held together by covalent bonds while the two strands of double stranded DNA are held together by hydrogen bonds?arrow_forwardWhich of the following is not included in the Watson-Crick model of DNA structure? The strands run parallel to each other. The resultant helix is right-handed. Strands are held together by hydrogen bonds between nitrogenous bases. The bases are held together in the central region of the molecule by hydrogen bonds. It is composed of two strands.arrow_forward
- Why do you think DNA is the genetic material used by eukaryotes instead of RNA?arrow_forwardWhich of the following statements are true about doublestranded DNA?a. A + C = T + Gb. A + G = C + Tc. A + T = G + Cd. A/G = C/Te. A/G = T/Cf. (C + A) / (G + T) = 1arrow_forwardEscherichia coli and other bacteria methylate adenines on the original strand to distinguish the original strand from the newly replicated strand of DNA. Why is this distinction important?arrow_forward
- All of the following statements are correct EXCEPT a. DNA forms described by Watson and Crick have right handed helix except of Z-DNA form b. In case of Z-DNA form, the deoxyribose phosphate backbone forms a "Zigzag structure" c. Inverted DNA sequence repeat that happens within each individual strand of the DNA, called cruciform d. Plasmid carries genes that convey antibiotic resistance to the host bacteriumarrow_forwardWhen Chargaff was performing his experiments, the tetranucleotide hypothesis, which stated that DNA was composed of GACT nucleotide repeats, was the most widely accepted view of DNA’s composition. How did Chargaff disprove this hypothesis?arrow_forwardIn the DNA structure, a purine molecule always binds with a pyrimidine molecule. How would you expect the structure to differ if Adenine forms base pairing with Guanine and Cytosine forms base pairing with Thymidine? Instead of A-T, G-C; can it be A-G, C-T? Justify your answer within five sentencesarrow_forward
- Which of the following strands of DNA (assuming it was bound to its complementary strand to create a double-helix structure) would be the least difficult to break apart? a. 5' - CCGCCGGCATATCCGAT - 3' b. 5' - CCGCGCGATCGGCGCGT - 3' c. 5' - AATGAGGCCAATTGACA - 3' d. 5' - CCACCAGGCACAGCCGA - 3' e. 5' - AAATTGATATATAGGCA - 3'arrow_forwardHeinz Shuster collected the following data on the base composition of ribgrass mosaic virus (H. Shuster, in The Nucleic Acids: Chemistry and Biology, vol. 3, E. Chargaff and J. N. Davidson, Eds. New York: Academic Press, 1955). On the basis of this information, is the hereditary information of the ribgrass mosaic virus RNA or DNA? Is it likely to be single stranded or double stranded? Percentage A G C T U Ribgrass mosaic virus 29.3 25.8 18.0 0.0 27.0arrow_forwardWhy is DNA & not RNA is the genetic material in majority of organisms?arrow_forward
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