Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 9, Problem 35RE
Interpretation Introduction
Interpretation:
The most obvious characteristic of the base distribution of a single-stranded DNA molecule is to be explained.
Concept Introduction:
The X-ray diffraction pattern shows that the base-pairing is complementary, that is, purines always form bonds with pyrimidines. The adenine base pairs with the thymine base, while the guanine base pairs with cytosine base.
The mole percentages of both the bonded bases remain equal. The two strands are called complementary strands because of the existing complementarity of the base pairs.
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Chapter 9 Solutions
Biochemistry
Ch. 9 - REFLECT AND APPLY Consider the following in light...Ch. 9 - Prob. 2RECh. 9 - RECALL What is the structural difference between...Ch. 9 - RECALL Give the name of the base, the...Ch. 9 - RECALL What is the difference between ATP and...Ch. 9 - RECALL Give the sequence on the opposite strand...Ch. 9 - RECALL Are the sequences shown in Question 6 those...Ch. 9 - REFLECT AND APPLY (a) Is it biologically...Ch. 9 - REFLECT AND APPLY A friend tells you that only...Ch. 9 - REFLECT AND APPLY In the early days of molecular...
Ch. 9 - REFLECT AND APPLY Why is RNA more vulnerable to...Ch. 9 - Prob. 12RECh. 9 - RECALL Draw a GC base pair. Draw an AT base pair.Ch. 9 - RECALL Which of the following statements is (are)...Ch. 9 - Prob. 15RECh. 9 - BIOCHEMICAL CONNECTIONS Describe the landmark case...Ch. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - RECALL Which of the following statements is (are)...Ch. 9 - RECALL Define supercoiling, positive supercoil,...Ch. 9 - RECALL What is propeller twist?Ch. 9 - RECALL What is an AG/CT step?Ch. 9 - RECALL Why does propeller-twist occur?Ch. 9 - Prob. 24RECh. 9 - RECALL If circular B-DNA is positively...Ch. 9 - RECALL Briefly describe the structure of...Ch. 9 - Prob. 27RECh. 9 - REFLECT AND APPLY List three mechanisms that relax...Ch. 9 - REFLECT AND APPLY Explain how DNA gyrase works.Ch. 9 - Prob. 30RECh. 9 - REFLECT AND APPLY Would you expect to find...Ch. 9 - REFLECT AND APPLY One of the original structures...Ch. 9 - REFLECT AND APPLY What is the complete base...Ch. 9 - REFLECT AND APPLY Why was it necessary to specify...Ch. 9 - Prob. 35RECh. 9 - Prob. 36RECh. 9 - Prob. 37RECh. 9 - BIOCHEMICAL CONNECTIONS A recent commercial for a...Ch. 9 - REFLECT AND APPLY A technology called PCR is used...Ch. 9 - REFLECT AND APPLY Why does DNA with a high AT...Ch. 9 - RECALL What are the three primary RNA types?Ch. 9 - RECALL What determines the base sequence of all...Ch. 9 - RECALL What is the name of the process that...Ch. 9 - RECALL What is the basic purpose of tRNA?Ch. 9 - RECALL The base sequence of which type of RNA is...Ch. 9 - RECALL What is the name of the process by which...Ch. 9 - Prob. 47RECh. 9 - Prob. 48RECh. 9 - Prob. 49RECh. 9 - RECALL Why do we say that micro RNAs are involved...Ch. 9 - Prob. 51RECh. 9 - Prob. 52RECh. 9 - Prob. 53RECh. 9 - Prob. 54RECh. 9 - Prob. 55RECh. 9 - Prob. 56RECh. 9 - REFLECT AND APPLY Would you expect tRNA or mRNA to...Ch. 9 - REFLECT AND APPLY The structures of tRNAs contain...Ch. 9 - REFLECT AND APPLY Would you expect mRNA or rRNA to...Ch. 9 - REFLECT AND APPLY Which would be more harmful to a...Ch. 9 - REFLECT AND APPLY Explain briefly what happens to...Ch. 9 - REFLECT AND APPLY Explain why a 50S ribosomal...Ch. 9 - Prob. 63RECh. 9 - Prob. 64RECh. 9 - Prob. 65RECh. 9 - Prob. 66RECh. 9 - RECALL What is the difference between miRNA and...Ch. 9 - Prob. 68RECh. 9 - Prob. 69RE
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- REFLECT AND APPLY In the MeselsonStahl experiment that established the semiconservative nature of DNA replication, the extraction method produced short fragments of DNA. What sort of results might have been obtained with longer pieces of DNA?arrow_forwardREFLECT AND APPLY What is the complete base composition of a double-stranded eukaryotic DNA that contains 22% guanine?arrow_forwardREFLECT AND APPLY (a) Eukaryotic DNA replication is more complex than prokaryotic replication. Give one reason why this should be so. (b) Why might eukaryotic cells need more kinds of DNA polymerases than bacteria?arrow_forward
- REFLECT AND APPLY Your book contains about 2 million characters (letters, spaces, and punctuation marks). If you could type with the accuracy with which the prokaryote E. coli incorporates, proofreads, and repairs bases in replication (about one uncorrected error in 109to1010 bases), how many such books would you have to type before an uncorrected error is permitted? (Assume that the error rate is one in 1010 bases.)arrow_forwardREFLECT AND APPLY What difficulties arise in the polymerase chain reaction if there is contamination of the DNA that is to be copied?arrow_forwardREFLECT AND APPLY Suggest a reason why it would be unlikely for replication to take place without unwinding the DNA helix.arrow_forward
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