Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 4, Problem 8TYU
Summary Introduction
Introduction:
Quantification of
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Students have asked these similar questions
The absorbance of a nucleic acid sample at 260 and 280 nm are 0.4857 and 0.2427, respectively. Based on the results, the sample is
a. pure DNA
b. pure RNA
c. DNA contaminated with RNA
d. DNA contaminated with protein
Enzymes that break down DNA catalyze the hydrolysis of the covalent bonds that join nucleotides together. What would happen to DNA molecules treated with these enzymes?
Group of answer choices
A. All bases would be separated from the deoxyribose sugars
B. The purines would be separated from the deoxyribose sugars
C. The phosphodiester linkages between deoxyribose sugars would be broken
D. The two strands of the double helix would separate
E. The pyrimidines would be separated from the deoxyribose sugars
If the nitrogen-based molecules present in
the DNA of an animal are found to be
13.2% adenine molecules, what
percentage of guanine would be present in
the animal's DNA?
a. 36.8%
b. 26.4%
c. 73.6%
d. 13.2%
Chapter 4 Solutions
Biological Science
Ch. 4 - What are the four nitrogenous bases found in RNA?...Ch. 4 - 2. What determines the primary structure of a DNA...Ch. 4 -
4. Which of the following rules apply to the...Ch. 4 - Prob. 3TYKCh. 4 - Prob. 5TYKCh. 4 -
6. What is responsible for the increased...Ch. 4 - Prob. 8TYUCh. 4 - Prob. 9TYUCh. 4 - Prob. 7TYUCh. 4 - Prob. 10TYU
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- Using suitable illustrations describe a method to sequence a fragment of DNA and include how the same method can be used to sequence RNA.arrow_forwardWhat is the effect of incubating a mixture of RNA and DNA with 0.1 M NaOH? A. DNA is hydrolyzed to nucleoside monophosphates. B. No effect. RNA and DNA are resistant to base hydrolysis. C. RNA is hydrolyzed to nucleoside monophosphates. D. Both RNA and DNA are hydrolyzed to nucleoside monophosphates. Stem-loop structures in RNA resemble the ________ form of double-helical DNA. A. A B. B C. supercoiled circular D. Zarrow_forward52arrow_forward
- An analysis of the bases in DNA present in body cells gave the following results: W units/g X units/g Y units/g Z units/g 31 45 45 31 The correct identification of each base would be: W Y Z A. adenine guanine B. cytosine adenine C. guanine D. thymine Select one: a. C b. D c. B d. A X thymine guanine thymine cytosine cytosine guanine cytosine thymine adenine adeninearrow_forwardIf the nitrogen-based molecules present in the DNA of an animal are found to be 13.2% adenine molecules, what percentage of guanine would be present in the animal’s DNA? Select one: a. 26.4% b. 36.8% c. 13.2% d. 73.6%arrow_forwardGive a clear explanation answerarrow_forward
- Review the table below. Nucleic acid from 4 different samples were analyzed to determine the amounts of nitrogenous bases in each. The amount is shown as a percentage. A G T U C Sample 1 22% 28% 22% 28% Sample 2 30% 30% 20% 20% Sample 3 18% 32% 18% 32% Sample 4 29% 29% 21% 21% What observations can you make from these data? Suggest at least two different observations. What conclusions can be supported by these observations? • Suggest one experiment that you could conduct to test or further investigate one of your conclusions from part b.arrow_forwardWhich of the following regions of a genome would be most likely to be a SINGLE CRE? A. A section of DNA that is 10 base pairs long B. A section of DNA that is 50 base pairs long C. A section of DNA that is 200 base pairs long D. A section of DNA that is 1500 base pairs longarrow_forwardThe nucleotides from a bacterial cell were found to have the following abundances: 39% uracil; 41% adenine, 9% cytosine; 8% guanine. What type of molecule is the genome of the bacteria likely made of? a. Double stranded DNA b. Single stranded DNA c. Messenger RNA d. Double stranded RNAarrow_forward
- DNA fingerprinting analyzes the DNA from individuals on the basis of the occurrence of in their genomes. a. repetitive sequences b. abnormalities in chromosome structure c. specific genes d. viral insertionsarrow_forwardPls answer in the images, choose the best answer.arrow_forwardExplain the principle of quality determination of DNA.arrow_forward
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