Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
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Chapter 12, Problem 5P
Interpretation Introduction
Interpretation:
The number of individual clones that would have to be screened to have a
Concept introduction:
DNA stands for deoxyribonucleic acid, is a biological macromolecule. In organisms, it carries genetic information and is required for protein production, cell reproduction, regulation and
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- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Preparing cDNA Libraries from Different Cells Describe an experimental protocol for the preparation of to cDNA libraries, one from anaerobically grown yeast cells and the second from aerobically grown yeast cell.arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Designing Primers for PCR Amplification of a DNA Sequence Given the following short DNA duplex of sequence (53)ATGCCGTAGTCGATCATTACGATAGCATAGCACAGGGATCCA- CATGCACACACATGACATAGGACAGATAGCAT what oligonucleotide primers (17-mers) would be required for PCR amplification of this duplex?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. An Estimation of Minimal Genome Size for a Living Cell Studies of existing cells to determine the minimum number of genes for a living cell have suggested that 206 genes are sufficient. If the ratio of protein-coding genes to non-protein-coding genes is the same in this minimal organism as the genes of Mycoplasma genitulium, how many proteins are represented in these 206 genes. How many base pairs would be required to form the genome of this minimal organism if the genes are the same size as M genilalium genes? (Section 1.5)arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Deducing DNA Sequence from Sanger Sequencing Results The output of an automated DNA sequence determination by the Sanger dideoxy chain termination method, performed as illustrated in Figure 11.3, is disp1ayed at right. What is the sequence of the original oligonucleotide?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. DNA Supercoiling Parameters A “relaxed,� circular, double-stranded DNA molecule (1600 bp) is in a solution where conditions favor 10 bp per turn. What is the value of L0 for this DNA molecule? Suppose DNA gyrase introduces 12 negative supercoils into this molecule. What are the values of L, W, and T now? What is the superhelical density, ?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. CRISPR/Cas9: Design of a gRNA to Target the Human PVALB Gene The human PVALB gene, which encodes the Ca2+-binding protein parvalbumin, can be Targeted by CRISPR/Cas9, at the protospacer sequence - ATGCAGGAGGGTGGCGAGAGGGGCCGAGAT- followed by a -TGG-PAM trinucleotide. Give the sequence of the spacer region of a gRNA that will target the complementary DNA strand at this site. Include at the 3'-end of your gRNA sequence a region that will form a stem-loop structure with a 5'-AGCAUAGCUGUAAAAC- sequence downstream in the gRNA to create the dsRNA-binding site for Cas9.arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Calculate the Number of Nucleosomes in a Human Diploid Cell Assume that there is one nucleosome for every 200 bp of eukaryotic DNA. How many nucleosomes are there in a diploid human cell? Nucleosomes in be approximated a disks 11 nm in diameter and 6 nm long. If all the DNA molecules in a diploid human cell are in the B-conformation, what is the sum of their lengths? If this DNA is now arrayed on nucleosomes in the beads-on-a-string motif, what would be the approximate total height of the nucleosome column if these disks were stacked atop one another?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. B- and Z-DNA Supercoiling Parameters Suppose one double helical turn of a superhelical DNA molecule changes conformation from B- to Z-form. What are the changes in L, W, and T? Why do you suppose the transition of DNA from B- to Z-form is favored by negative supercoiling?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. B- and Z-DNA Helical Parameters I A 41.5-nm-long duplex DNA molecule in the B conformation adopts the A-conformation upon dehydration. How long is it now? What is its approximate number of base pairs?arrow_forward
- Answers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. Identifying DNA Structural and Functional Elements from Nucleotide Sequence Information Listed below are four DNA sequences. Which one contains a type-II restriction endonuclease (six-cutter) hexanucleotide site?. Which one is likely to form a cruciform structure? Which one is likely to be found in Z-DNA? Which one represents the 5'-end of a tRNA gene? Which one is most likely to be found in a triplex DNA structure? a. CGCGCGCCGCGCACGCGCTCGCGCGCCGC b. GAACGTCGTATTCCCGTACGACGTTC c. CAGGTCTCTCTCTCTCTCTCTC d. TGGTGCGAATTCTGTGGAT e. ATCGGAATTCATCGarrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. B-and Z-DNA Helical Parameters II If 80% of the base pairs in a duplex DNA molecule (12.5 kbp) are in the B-conformation and 20% are in the Z-conformation, what is the length of the molecule?arrow_forwardAnswers to all problems are at the end of this book. Detailed solutions are available in the Student Solutions Manual, Study Guide, and Problems Book. A Simple Genome and Its Protein-Encoding Capacity The genome of the Mycoplasma genitalium consists of 523 genes, encoding 484 proteins, in just 5S0.U74 base pairs (see Table 1.6). What fraction of the M. genitalium genes encode proteins? What do you think the other genes encode? If the fraction of base pairs devoted to protein-coding genes is the same as the fraction of the total genes that they represent, what is tlie average number of base pairs per protein-coding gene? If it takes three base pairs to specify an amino acid in a protein, how many amino acids are found in the average M. genitalium protein? If each amino acid contributes, on average, 12U daltons to the mass of a protein, what is the mass of an average M. genitalium protein? (Section 1.5)arrow_forward
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