Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 21.3, Problem 2P
If one of the strands of DNA has the following sequence of bases running in the 5’ S 3’
direction,
5’—G—G—A—C—A—A—T—C—T—G—C—3’
a. what is the sequence of bases in the complementary strand?
b. what base is closest to the 5’-end in the complementary strand?
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abbreviation for the Strand of DNA WITH
complementary bases to the one shown above. Indicate the
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9. In the DNA double helix, why are purine bases on one DNA strand never paired with other
purine bases on the opposite strand? There is more than one reason.
When a single strand of DNA is making a copy of itself it uses the above code◦ AAT CGC AGG CCA ATG (example DNA code)◦ TTA GCG ____ AAC ___ (example DNA key)
AAT-CGT-TCG =
Chapter 21 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 21.1 - Draw the structure for each of the following: a....Ch. 21.3 - If one of the strands of DNA has the following...Ch. 21.4 - The 2,3-cyclic phosphodiester that is formed...Ch. 21.5 - Using a dark line for the original parental DNA...Ch. 21.7 - Why do both thymine and uracil specify the...Ch. 21.9 - If methionine is always the first amino acid...Ch. 21.9 - Four Cs occur in a row in the segment of mRNA...Ch. 21.9 - UAA is a stop codon. Why does the UAA sequence in...Ch. 21.9 - A change in which base of a codon would be least...Ch. 21.9 - Write the sequences of bases in the sense strand...
Ch. 21.9 - List the possible codons on mRNA that specify each...Ch. 21.10 - Adenine can be deaminated to hypoxanthine, and...Ch. 21.10 - Explain why thymine cannot be deaminated.Ch. 21.12 - Which of the following base sequences would most...Ch. 21 - Draw structures for the following: a....Ch. 21 - What nonapeptide is coded for by the following...Ch. 21 - What is the sequence of bases in the template...Ch. 21 - What is the sequence of bases in the sense strand...Ch. 21 - What would be the C-terminal amino acid if the...Ch. 21 - What would be the base sequence of the segment of...Ch. 21 - Propose a mechanism for the following reaction:Ch. 21 - A segment of DNA has 18 base pairs. It has 7...Ch. 21 - Match the codon with the anticodon: Codon: AAA GCA...Ch. 21 - Using the single-letter abbreviations for the...Ch. 21 - Indicate whether each functional group of the five...Ch. 21 - Using the A and D designations in Problem 25,...Ch. 21 - Which of the following pairs of dinucleotides are...Ch. 21 - If an mRNA contained only U and G in random...Ch. 21 - Why is the codon a triplet rather than a doublet...Ch. 21 - Human immunodeficiency virus (HIV) is the...Ch. 21 - The amino acid sequences of peptide fragments...Ch. 21 - Which cytosine in the following sense strand of...Ch. 21 - Prob. 33PCh. 21 - Why does DNA not unravel completely before...Ch. 21 - The first amino acid incorporated into a...
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- DNA Replication1) Construct the complementary strand of DNA (strand II) that would pair with the DNA strand I sequence below. Remember that nucleotides are always added in the 5 prime to 3 prime direction. The base pairing rules are: DNA DNAadenine (A) always bonds with thymine (T) thymine (T) always bonds with adenine (A) guanine (G) always bonds with cytosine (C) cytosine (C) always bonds with guanine (G) STRAND I: 3’ T A C T A T A G T C T G T C T C C C A C T 5’ STRAND II: 5’ 3’arrow_forwardWrite the base sequence and label the 3’ and 5’ ends of the complementary strand for a segment of DNA with the base sequence 5’ GCTATTGCA 3’.arrow_forwardWhich of the following tentative base-pairs (designated A-F) actually exist in a double-stranded DNA and are referred to as canonical Watson-Crick base-pairs? లోక్కూల కనరి కనడు NH HN NH, NH HN H,N H.N DAA De B OcC DEE ORFarrow_forward
- A General (Ix N 7C Social x C Clever | P x C Clever | P A General ( x 4 General N Third Ma x ←→ C合 app.edulastic.com/student/assessment/60525b29af74cf0008c2b68f/class/5f20cf3d5dd16ded17965 > NEXT A BOOKMARK Question 9/19 Mistakes or Mutations in the DNA can be: Harmful B Beneficial Neutral All of the above Type here to search DELLarrow_forwardPlease don't provide handwriting solutionarrow_forwardWhich of the following amino acid has an aromatic group? * (2 Points) valine O lysine threonine O tyrosinearrow_forward
- Based on the following nucleotide structure, answer the following questions: H2N N- Но-Р-о- N. OH a. Is the base present in this nucleotide a purine or a pyrimidine? b. What is the abbreviation for the base present in this nucleotide? (A, T, C, G, U) Would the sugar in this nucleotide be found in molecules of DNA or RNA or both? d. Would the base in this nucleotide be found in molecules of DNA, RNA or both?arrow_forwardConsidering the following nucleic acid in the image: Is the nucelic acid part of DNA or RNA? Is the nucleobase a purine or a pyrimidine? And is the oxygen heterocycle pyranose or furanose?arrow_forward13 Which structure is NOT present in DNA? * (1 Point) A B D E NH2 NH2 H3C. N-H // N' NH2 H. H B D 14 Structure IV is an example of * (2 Points) OH H. но. -OH но- -H но- -H HO -H но - но- -H- но- H- но- -H но H Он H- -O- H- -OH- H- -OH H- -OH H- -OH OH H. Он но но HO. ÓH II IV V O aldonic acid O aldaric acid O ketopentose O aldohexose O pyranose 15 Atropine, ephedrine and reserpine are examples of * (2 Points) O glycosides O aminosugars fatty acids O alkaloids O uronic acids O O O O O O OOarrow_forward
- Write the base sequence and label the 3' and 5' ends of the complementary strand for a segment of DNA with the following base sequences: 5'ATGAC3'arrow_forwardThe following compound is a(n) amino acid. dipeptide tripeptide polypeptide proteinarrow_forward+ In the drawing area below you'll find half of a single base pair of DNA. Draw the rest of the base pair. Note: only the nucleobase is shown, and R is used to stand for the "rest" of the strand of DNA. Please use R in your drawing to represent the "rest" of the other strand of DNA. H. H N R N H X : ⑤arrow_forward
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Nucleic acids - DNA and RNA structure; Author: MEDSimplified;https://www.youtube.com/watch?v=0lZRAShqft0;License: Standard YouTube License, CC-BY