Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 4, Problem 6TYU
Summary Introduction
Introduction:
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What is the approximate diameter of double helix of DNA?
A. 2000 pm
B. 3400 pm
C. 800 pm
D. 340 pm
What is a reasonable length for an RNA primer in E.coli?
A.
1000 nucleotides
B.
100 nucleotides
C.
50 nucleotides
D.
a few nucleotides
If the DNA of an organism contains 20% adenine, what is its percentage of guanine?
a.20%
b.60%
c.80%
d.30%
Chapter 4 Solutions
Biological Science (6th Edition)
Ch. 4 - What are the four nitrogenous bases found in RNA?...Ch. 4 - 2. What determines the primary structure of a DNA...Ch. 4 - 3. Which of the following describes the synthesis...Ch. 4 - Prob. 4TYKCh. 4 - Prob. 5TYUCh. 4 - Prob. 6TYUCh. 4 - What would be the sequence of the strand of DNA...Ch. 4 - 8. According to the RNA world model, a ribozyme...Ch. 4 - Make a concept map (see BioSkills 12 ) that...Ch. 4 - Prob. 10TYPSS
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- Which set of DNA fragments below would require a polyacrylamide gel to effectively separate the bands during electrophoresis? (select all that apply) a. 500 bp, 505 bp, 510 bp b. 45 bp, 30 bp, and 20 bp c. 700 bp, 800 bp, 900 bp d. 800 bp, 1000 bp, 22000 bparrow_forwardWhat feature of a DNA fragment causes it to move through a gel during electrophoresis? a. the electrical charges of its phosphate groups b. its nucleotide sequence c. the hydrogen bonds between its base pairs d. its double helix shapearrow_forwardAccording to Chargaff’s rules for DNA base composition, if a DNA sample contained 10% guanine, the sample should have: A. 40% cytosine B. 90% cytosine C. 10% adenine D. 40% thyminearrow_forward
- Which statement about nonpolar interactions in the formation of the DNA double helix is INCORRECT? A. Van der Waals interactions are nearly optimal in a double-helical structure. B. Nonpolar surfaces of the bases are moved into contact with each other due to a more complete base stacking. C. Nucleotide bases tend to stack even in single-stranded DNA molecules. D. The separation distance of the planes of adjacent bases needs to be adjusted for the favorable van der Waals contacts. E. Surface complementary maximizes the formation of hydrogen bonds and van der Waals interactions while minimizing the nonpolar surface area exposed to the aqueous environment.arrow_forwardWhat is the approximate length of a complete turn of a double helix of DNA? A. 3400 pm B. 340 pm C. 2000 pm D. 800 pmarrow_forwardWhat is the purpose of Bromophenol Blue in electrophoresis? a. To follow the progress of the gel as it is running b. It acts as a DNA size ladder or DNA size standards. c. To allow the electric current to move through the gel. d. To visualize the DNA after the gel has finished running. What is the purpose of acetate in TAE? a. It helps to maintain the pH of the buffer b. To carry electrons to allow the electric current to travel through the gel. c. It is used to stop the action of DNases d. It is required to see the DNA on a UV light.arrow_forward
- Refer to the relative proportions diagram in the first picture. 1. To help reveal patterns in the data, graph the data from the table on the grid provided (the second picture). 2. Write two inferences based on your observations and analysis of the patterns that emerge from the data. Your inferences should give insight into the structure of DNA. 3. Formulate two or three claims about the data in Part 1. Be sure each claim is supported by the data. 4. Using the claims you developed, complete the data table that is provided in the picture (Relative Proportions Chart that is labeled "For question 4".arrow_forwardWhen working with the gel electrophoresis chamber, what must we keep in mind? A. Keeping the gel flat on the table without any buffer solution B. Not changing your pipette in between DNA samples C. Not shaking the chamber after the DNA has been loaded D. Loading two DNA samples per a single wellarrow_forwardEnzymes can break down the DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes? a. The two strands of the double helix would separate b. The phosphodiester linkages of the polynucleotide backbone would be broken. c. The pyrimidines would be separated from the deoxyribose sugar. d. All bases would be separated from the deoxyribose sugars.arrow_forward
- Choose the combination of answers that most accurately completes the statement. Why must the lagging strand of DNA be replicated in short pieces? a. because of limited space b. otherwise, the helix will become distorted c. the DNA polymerase can synthesize in only one direction d. to make proofreading of code easierarrow_forwardChoose the combination of answers that most accurately completes the statement.Why must the lagging strand of DNA be replicated in short pieces? a. because of limited space b. otherwise, the helix will become distorted c. the DNA polymerase can synthesize in only one direction d. to make proofreading of code easierarrow_forwardWhat defines one end of a DNA molecule as the 5’ end? a. What defines the other end at the 3’ end? b. When two strands of DNA are paired together to form a functional molecule, what is interesting to note about their 5’ and 3’ ends?arrow_forward
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