QUESTION 14The Hershey and Chase experiments, in which radioactive phosphorus (32P) and radioactive sulfur (35S) were used, demonstrated thatOa. DNA labeled with 32P is transferred from the bacteriophage to the virusO b.DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hostsOc. proteins labeled with 35S become deactivated and unable to be transferredO d. DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experimentO e. bacteriophages transfer their DNA, not their coat proteins, into their hostsQUESTION 15Which of the following makes its own food using energy and simple raw materials it obtains from nonbiological sources?O a. CellO b. ProducerO C. ProtistO d. ConsumerO e. NutrientQUESTION 16A salt will dissolve in water to formO a basesO b.acidsO c. buffersO d. jons other than H* and OHO e.only hydrogen and oxygen bondsQUESTION 17The solvent, cohesive, and temperature stabilization properties of water are primarily due to itsa.ahility to nromote hydrophilic interactionsClick Save and Submit to save and submit. Click Save All Answers to save all answers.

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QUESTION 14 The Hershey and Chase experiments, in which radioactive phosphorus (32P) and radioactive sulfur (35S) were used, demonstrated that O a. DNA labeled with 32P is transferred from the bacteriophage to the virus O b.DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hosts Oc proteins labeled with 35S become deactivated and unable to be transferred O d. DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experiment O e. bacteriophages transfer their DNA, not their coat proteins, into their hosts

QUESTION 14 The Hershey and Chase experiments, in which radioactive phosphorus (32P) and radioactive sulfur (35S) were used, demonstrated that O a. DNA labeled with 32P is transferred from the bacteriophage to the virus O b.DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hosts Oc proteins labeled with 35S become deactivated and unable to be transferred O d. DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experiment O e. bacteriophages transfer their DNA, not their coat proteins, into their hosts

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Question 3 In order for transcription to begin, the DNA-duplex must be "opened" to allow RNA polymerase access to the unwound segment. All help in the ease of the "opening" of DNA-duplex EXCEPT: A negative supercoiling. B binding of RNA polymerase o-subunit. c) low melting temperature, TM, in the Pribnow box. D G-C rich DNA duplex.
QUESTION 2 Within a few weeks of treatment for herpes virus with the drug isonazide, a patient's herpes virus population consists entirely of isonazide-resistant viruses. How can this result best be explained? O A. The drug caused the HIV RNA genome to change O B. The isonazide drug spontaeously converted to a form ineffective against the virus. O C HIV began making drug-resistant versions of reverse transcriptase (a viral enzyme) in response to the drug O D. None of the above
QUESTION 2 Which of the following would be classified as non-coding DNA? (mark all applicable answers) The cytochrome oxidase Il gene found on the human mitochondrion Introns of the alpha hemoglobin gene found on human chromosome 16 Exons of the alpha hemoglobin gene found on human chromosome 16 U The DNA between genes in the human genome (also referred to as intergenic regions or IGRS)
Question 7. What are the first three amino acids in the protein that is produced from this gene? -35 sequence Pribnow box 5' GATTCCGTATTACAGCATAGGCTATATTCACGTGGATGGCTAGT... 3' 3' СТААGGCAТААTGTCGTATСCGATATAAGTGCACCTАCCGAТСА. .. 5' Start site
Question 2. From mouse nerve cells you isolate the mouse Tau-gene-containing DNA fragment and hybridize it to the mRNA encoding Tau from the cytoplasm of the same cells. Describe what you see when you look at the molecules under the electron microscope. A. A double-stranded DNA-RNA hybrid with complete overlap of all the sequences. B. A partially double stranded DNA-RNA hybrid molecule containing regions of DNA-RNA overlap representing the mRNA exons, loops where there are introns and tails at the 5' and 3' ends. C. A partially double-stranded molecule containing regions of DNA-RNA overlap representing the mRNA introns, loops where there are introns and tails at the 5' and 3' ends. D. Regions of DNA-RNA overlap representing the mRNA exons and loops where there are introns with no tails at the 5' or 3' ends. E. Two distinct molecules with no overlapping regions. Multiple Choice
Question 48
Question 20 : The restriction map of the plasmid pSC48 is presented below. The numbers in parentheses correspond to the position of the respective restriction site with respect to position (0). (0) BamHI ЕcoRI (4640) (620) PSC48 5200 pb BamHI (1130) Smal ЕcoRI (3420) (1350) The plasmid has been digested by one or several restriction enzyme(s). The digestion products have been analysed by agarose gel electrophorese. (see figure below). 1 2 10,000 8,000 6,000 5,000 4,000 3,000 2,500 –2,000 - 1,500 -1,000 -750 - 500 -250 1. Digestion products 2. Size marker base pairs Which restrcition enzyme(s) have been used for the digestion? (Indicate the right answer) А- ЕсoRI. B- EcoRI/BamHI. C- EcoRI/Smal. D- BamHI. E- Smal. | |
Question 44 please
QUESTION 15 The researchers Hershey and Chase conducted an experiment where they radioactively labeled the proteins of a T2 phage with 35S. In a separate treatment, they labeled the DNA of a T2 phage with 32p. They allowed the labeled T2 phage to infect E. coli and then agitated the cells so that the phage would fall off of the cells. The cells were then spun down to the bottom of the tubes. When the proteins were labeled, did the researchers see radioactivity in the pelleted cells or the supernatant (liquid on top of pellet)? When the DNA was labeled, did the researchers see radioactivity in the pelleted cells or the supernatant? What conclusion did Hershey and Chase draw from this experiment?
QUESTION 7 The recognition sites for the restriction enzymes BamHI, Xbal, and BglII are G^GATCC, T^CTAGA, and A^GATCT, respectively. Which enzymes leave compatible ends that can be ligated together? O A. All of these enzymes leave ends that are compatible with ends generated by the others. O B. None of the enzymes produce compatible ends. C. Only BamHI and BglII fragments are compatible. O D. Only BamHI and Xbal fragments are compatible. O E. Only BglII and Xbal fragments are compatible.
QUESTION 16 Which of the following best describes the proper sequential order of the dogma of molecular genetics? O A. Deoxyribonucleic acid is converted to a pre-messenger ribonucleic acid that is modified to a messenger ribonucleic acid that is converted to a polypeptide chain, which is modified to a protein. B. Nucleic acid is converted to a pre-messenger ribonucleic acid that is modified to a messenger ribonucleic acid, which t is converted to a polypeptide chain that is modified to a protein. OC. Nucleotide is converted to a messenger ribonucleic acid that is modified to a polypeptide chain, which is modified to a protein. O D. Polynucleotide is converted to a pre-messenger ribonucleic acid that is modified to a messenger ribonucleic acid that is converted to a polypeptide chain, which is modified to a protein. O E. None of the answers (A, B, C, and D) is the correct answer choice for this question. QUESTION 17 Which of the following statements is precisely correct/true? O A.…
Question 6 In order for transcription to begin, the DNA-duplex must be "opened" to allow RNA polymerase access to the unwound segment. All help in the ease of the "opening" of DNA-duplex EXCEPT: A low melting temperature, TM, in the Pribnow box. B G-C rich DNA duplex. c) binding of RNA polymerase o-subunit. D negative supercoiling.