Campbell Essential Biology with Physiology (6th Edition)
6th Edition
ISBN: 9780134711751
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 4SQ
A scientist inserts a radioactively labeled DNA molecule into a bacterium. The bacterium replicates this DNA molecule and distributes one daughter molecule (double helix) to each of two daughter cells. How much radioactivity will the DNA in each of the two daughter cells contain? Why?
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Students have asked these similar questions
A scientist inserts a radioactively labeled DNA molecule into a bacterium. The bacterium replicates this DNA molecule and distributes one daughter molecule (double helix) to each of two daughter cells. How much radioactivity will the DNA in each of the two daughter cells contain? Why?
You are trying to determine the base content for a number of samples in the lab (mouse DNA, bacterial DNA, single-stranded DNA virus and double-stranded RNA virus). Unfortunately, you failed to use an alcohol-proof marker and during the ethanol precipitation of your samples the labels came off the tubes. You finish the experiment anyway and try to use the data to determine the samples. Can you determine the source of each sample based on your results? Briefly explain how you come to your designations.
Sample
% adenine
% cytosine
% guanine
% thymine
% uracil
A
18
32
32
18
0
B
26
18
32
24
0
C
31
19
19
0
31
D
10
40
40
10
0
A plasmid is a DNA double helix in which the ends of each of the strands of nucleotides are
attached to each other, forming a circular DNA molecule.
1) True
2) False
Chapter 10 Solutions
Campbell Essential Biology with Physiology (6th Edition)
Ch. 10 - A molecule of DNA contains two polymer strands...Ch. 10 - Name the three parts of every nucleotide.Ch. 10 - Prob. 3SQCh. 10 - A scientist inserts a radioactively labeled DNA...Ch. 10 - The nucleotide sequence of a DNA codon is GTA....Ch. 10 - Describe the process by which the information in a...Ch. 10 - Prob. 7SQCh. 10 - A geneticist finds that a particular mutation has...Ch. 10 - Scientists have discovered how to put together a...Ch. 10 - How do some viruses reproduce without ever having...
Ch. 10 - HIV requires an enzyme called _____ to convert its...Ch. 10 - Prob. 12IMTCh. 10 - Prob. 13IMTCh. 10 - Prob. 14IMTCh. 10 - A cell containing a single chromosome is placed in...Ch. 10 - In a classic 1952 experiment, biologists Alfred...Ch. 10 - Prob. 17PSCh. 10 - Prob. 18BSCh. 10 - Prob. 19BSCh. 10 - Flu vaccines have been shown to be safe, are very...
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- DNA replication is semi-conservative, this statement means that Question 6 options: a) the new DNA molecules that are made are not identical to the original DNA molecule. b) the new DNA molecules that are made are only partially DNA since RNA primers are included. c) the new DNA molecules that are made are composed of one strand of the old DNA molecule and one strand of new DNA. d) of the two new DNA molecules made, one is entirely new DNA and one is entirely old new. e) the new DNA molecules that are made have a mixture of old and new DNA in each strand of the DNA duplex, randomly interspersed.arrow_forwardThere are 6 parts to this question: This is a follow up to the prior question regarding the replication of the DNA strand below. The DNA strand is here for your reference and you do not need to do anything with or to it. TC GATATCGG AGCTATAGCC c) what enzyme separated the parental DNA template strands, d) what bonds were broken? e) what enzyme replicates DNA f) before DNA can be replicated/copied, what must be laid down to allow the enzyme in "e" to replicated the DNA (be specific)? g) our DNA is replicated in many "pieces", what enzyme connects these many "pieces" into one continuous DNA strand that becomes the sister chromatid? h) during what specific phase of the cell cycle does this DNA replication process occur? (This should be a review question from last topics we covered).arrow_forwardDNA replication is called semi- conservative because of the two new strands of DNA is old DNA from the original DNA molecule and is new DNA. Answers to choose from: 1) Half 2) All 3) Nonearrow_forward
- Answer the following questions. A) Write the protein that catalyzes the formation of phosphodiester bonds. B) Write the protein that breaks the covalent bonds. C) A mutated strain of E. coli normally replicates DNA at 25ºC, but replication immediately stops when the temperature is raised to 37ºC. Which protein is functional at higher temperature? Probably not, please write. D) Write down the enzyme that catalyzes the binding of an amino acid to tRNA in the formation of aminoacyl tRNA. E) Write down the enzyme that is mostly responsible for the synthesis of the chain that begins to form during DNA replication in E. coliarrow_forwardA bacterium undergoes four rounds of replication. How many cells would result, and how many of those cells would still have part of an original DNA strand from the starting bacterium?arrow_forwardWhich of the following is NOT correct concerning the initiation of replication in E. coli? Question 29 options: A) It involves a region of the DNA called oriC. B) DnaA proteins bind to the DNA to begin separation of the strands. C) The strands are initially separated at GC-rich regions of DNA. D) Following initial separation, enzymes continue to separate the parental DNA strands around the rest of the chromosome.arrow_forward
- What technique was used to photograph DNA in franklins famous photo #51? A- gamma ray photography B- atomic force microscopy C- electron microscopy D- x-Ray crystallographyarrow_forwardA cell containing a single chromosome is placed in a medium containing radioactive phosphate, making a new DNA strand formed by DNA replication radioactive. The cell replicates its DNA and divides. Then the daughter cells replicate their DNA and divide, resulting in a total of four cells. Sketch the DNA molecules in all four cells, showing a normal DNA strand as a solid line and a radioactive DNA strand as a dashed line.arrow_forwardYou wish to produce a high-value protein using recombinant DNA technology. Would you try to develop a chemical defined medium or a complex medium? Why? Explain what semiconservative replication means. Give characteristic dimensions for each of these organisms: E. coli Yeast (S. cerevisiae) Liver cell (hepatocyte) Plant cell .What are the differences in cell envelope structure between gram-negative and gram-positive bacteria? These differences become important if you wish to genetically engineer bacteria to excrete proteins into the extracellular fluid.arrow_forward
- Primer needed to initiate DNA replication is A) DNA segment B) RNA segment C) DNA-RNA hybrid D) Nucleotidearrow_forwardChemical analysis shows that a nucleic acid sample contains A, U, C, and G. Is this DNA or RNA? Why?arrow_forwardBacterial DNA has how many origins of replication? A) 0 B) 1 C) 10 D) depends on the size of the DNAarrow_forward
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