Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 9, Problem 3TY
Summary Introduction
Introduction:
The DNA double helix consists of sugar-phosphate backbones, which are alternating units of deoxyribose and phosphate joined with covalent bonds. The two chains of DNA are arranged parallel to each other but oriented in the opposite direction. The two chains are joined by hydrogen bonds.
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Chapter 9 Solutions
Principles of Biology
Ch. 9.1 - Look ahead to Figure 17.10. How does bacterial...Ch. 9.1 - Prob. 1TYKCh. 9.2 - Prob. 1CCCh. 9.2 - Prob. 2CCCh. 9.2 - Prob. 3CCCh. 9.2 - A nucleotide composed of deoxyribose, phosphate,...Ch. 9.2 - Prob. 2TYKCh. 9.2 - Prob. 3TYKCh. 9.3 - Prob. 1TYKCh. 9.3 - To determine the structure of DNA, Watson and...
Ch. 9.4 - Prob. 1CCCh. 9.4 - Prob. 1TYKCh. 9.4 - Prob. 2TYKCh. 9.5 - Prob. 1CCCh. 9.5 - Prob. 1TYKCh. 9.5 - Prob. 2TYKCh. 9.5 - Prob. 3TYKCh. 9.6 - Prob. 1CCCh. 9.6 - A nucleosome is composed of 146 bp or 147 bp of...Ch. 9.6 - After they have replicated and become compacted in...Ch. 9.6 - Prob. 1BCCh. 9.6 - Which of the following is the correct order for...Ch. 9 - What is/are the main component(s) of chromosomes?...Ch. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Of the following statements, which is correct when...Ch. 9 - Prob. 6TYCh. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - The conversion of euchromatin into heterochromatin...Ch. 9 - What are the four criteria that the genetic...Ch. 9 - What are the key features of DNA that allow it to...Ch. 9 - PRINCIPLES A principle of bioloy is that structure...Ch. 9 - Prob. 1CBQCh. 9 - Prob. 2CBQ
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- For double-stranded DNA, which of the following statements is true? a) A = C b) A = G and C = T c) A + C = G + T d) A + T = G + C e) B and C are truearrow_forwardYou perform an experiment to determine the complete melting profile of a relatively long DNA duplex with 80% G:C base pairs. Sketch a graph of Absorbance at 260 nm (Y-axis) vs. Temperature (X-axis). Label the location of the Tm and describe what is happening to the DNA structure in each segment of the graph (lower Temps, highest Temps, at Tm).arrow_forwardDuring agarose gel electrophoresis, why does DNA move through the gel when electric current is applied? because DNA is negatively charged because a charged chemical from the loading buffer is bound to the DNA because DNA is positively charged because DNA absorbs electricityarrow_forward
- In primer designing, which of the following statements is correct? a. Primers should be 18-24 bases in length. b. Base composition should be 45-55% (G+C). c. Melting temperatures between 55-70°C are preferred. d. All choices are correct.arrow_forwardWhy evenly spaced sequence in chromatogram is an indication of a good DNA chromatogram?arrow_forwardWhich of the following is most needed to determine the DNA quantity using the eyeball method? -DNA ladder -loading buffer -positive control -negative controlarrow_forward
- Which of the following factors favors the formation of the Random DNA Coil? a Enthalpy b Base-Pairing c Phosphate group interactions d Stacking Energiesarrow_forwardWhen gel electrophoresis is done correctly, which of these DNA molecules would move the least through the gel? Group of answer choices: 1000 bp molecules 6 Kbp molecules 3 Kbp molecules 2000 bp moleculesarrow_forwardVisually compare the intensity of your team’s Plant-DNA sample with the intensity of the 3 kb band on the DNA ladder (see figure posted below). For example, if your Plant- DNA sample closely matches the 3 Kb band, this represents approximately 125 ng of total DNA. Divide the approximate mass (ng) of DNA in your sample by the volume loaded in the gel minus the loading dye added (i.e., 12 – 2 = 10 μL, since you loaded 12 μL from a 24 μL sample that contained 20 μL DNA prep + 4 μL loading dye. What is the DNA concentration of your sample? ______ng/μLarrow_forward
- Which of the following is most relevant to the term "hybridization"? a) base pairing b) nuclease c) sequencing d) replicationarrow_forwardWhich of the following relations will be true for the percentage of bases in double-stranded DNA? a. C + T = A + G b. CA = TGarrow_forwardIn order to determine the purity of a DNA sample. spectrophotometry can be carried out at _______ to measure DNA, and _______ to measure protein. The ratio _______ is then calculated, and a number between _______ indicates higher purity. 280 nm; 260 nm; A280/A260; 0.5-1 260 nm; 280 nm; A260/A280; 0.5-1 260 nm; 280 nm; A260/A280; 1.5-2 260 nm; 280 nm; A280/A260; 1.5-2arrow_forward
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