EP CONNECT ONLINE ACCESS FOR BIOLOGY
20th Edition
ISBN: 9781260494655
Author: Raven
Publisher: MCG COURSE
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Chapter 26, Problem 3A
Summary Introduction
Introduction: Influenza is the acute viral infection of the upper and lower respiratory tracts. It is also referred to as flu that is characterized by fever, chills, headache, sore throat, runny nose, generalized weakness, and pain in muscles. Influenza is classified into three main groups, namely, A, B, and C.
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What is the function of reverse transcriptase in retroviruses?
O A. It converts host cell RNA into viral DNA.
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O. It translates viral RNA into proteins.
D. It uses viral RNA as a template for DNA synthesis, that is, it makes complementary DNA.
after a successful infection by a viral particle, it integrates its genome into the host DNA. which term best describe the change of host genome?
a. none
b.silent mutation
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Which nucleic-acid based technique will detect norovirus?
A. Fluorescent In Situ Hybridization (FISH) probes
B. PCR with primers specific for the genome of this virus
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A patient's blood sample tests positive for the antigen to Vibrio cholerae. Which of the following interpretations is correct?
A. This person has cholera.
B. This person was exposed to any species of Vibrio.
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Chapter 26 Solutions
EP CONNECT ONLINE ACCESS FOR BIOLOGY
Ch. 26.1 - Prob. 1LOCh. 26.1 - Prob. 2LOCh. 26.2 - Prob. 1LOCh. 26.2 - Prob. 2LOCh. 26.3 - Prob. 1LOCh. 26.3 - Describe how viruses can contribute DNA to their...Ch. 26.4 - Describe the differences between acute and...Ch. 26.4 - Prob. 2LOCh. 26.4 - Prob. 3LOCh. 26.5 - Prob. 1LO
Ch. 26 - Prob. 1UCh. 26 - Prob. 2UCh. 26 - Prob. 3UCh. 26 - Prob. 4UCh. 26 - Why is a drug that blocks HIV binding to one of...Ch. 26 - Prob. 6UCh. 26 - Prob. 7UCh. 26 - Prob. 1ACh. 26 - Prob. 2ACh. 26 - Prob. 3ACh. 26 - Prob. 4ACh. 26 - Prob. 5ACh. 26 - Prob. 6ACh. 26 - Prob. 7ACh. 26 - E. coli lysogens derived from infection by phage ...Ch. 26 - Prob. 2SCh. 26 - Prob. 3SCh. 26 - Prob. 4SCh. 26 - Prob. 5S
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- In Hershey and Chase’s experiment investigating which biological molecule carries genetic information, they found that phage DNA with radiolabeled phosphorus was retained in bacterial cells after transduction. To conclude that DNA is the genetic material, what assumption did they have to make? A. Protein does not enter the bacterium during transduction. B. DNA does not stay in the media after transduction. C. All of the phage DNA was radiolabeled. D. Bacteria can be transduced by phage.arrow_forwardA biologist develops a new drug that seems to dramatically slow the onset of symptoms resulting from HIV infection. Close monitoring of HIV-infected cells reveals that the viral proteins are in the form of long polyproteins. What kind of drug did the biologist develop? A. It is a glycosyl transferase inhibitor. B. It is an integrase inhibitor C. It is a protease inhibitor. D. It is a CD4 inhibitor. please explain why which answer is correct and which is wrong and whyarrow_forwardIf the HIV did not have a reverse transcriptase enzyme, then which of the following would apply? Select one: a. The virus can make use of the reverse transcriptase enzyme from the host cell to convert its RNA into DNA b. Viral particles will be produced without reverse transcriptase enzyme since the original HIV is an RNA virus and needs to assemble RNA ant coat proteins together c. The virus will manufacture its proteins from its RNA using translation and ribosomes from host cell d. Provirus will not be formed and assembly of viral particles will never occur e. The virus will not be able to recognise the host cell and therefore entry into the cell is blockedarrow_forward
- How can you design your RT-PCR experiment to control for gDNA contamination? A. Use forward and reverse primers that bind to the same exon. B. Run a control lane where only RT was performed and not PCR. C. Run a control lane where MRNA has been amplified using PCR. D. Use forward and reverse primers that span the junction of 2 separate exons.arrow_forwardTo synthesize DNA, what does telomerase use as a template? a. It uses the DNA in the 3′ overhang region. b. It uses RNA that is a component of telomerase. c. No template is used. d. Both a and b are correct.arrow_forwardWhy can’t retrotransposons move from one cell to another like retroviruses?a. Because they do not encode the Env proteinb. Because they are nonautonomous elementsc. Because they require reverse transcriptased. a and b are both true.arrow_forward
- What is the function of resolvase in recombination? a. It unwinds double-stranded DNA. b. It allows a single DNA strand to invade a DNA helix. c. It displaces one of the original DNA strands during branch migration. d. It cleaves the Holliday structure.arrow_forwardIn Hershey and Chase’s experiment investigating which biological molecule carries genetic information, they found that phage DNA with radiolabeled phosphorus was retained in bacterial cells after transduction. To conclude that DNA is the genetic material, what assumption did they have to make? (photo linked) A. Protein does not enter the bacterium during transduction. B. DNA does not stay in the media after transduction. C. All of the phage DNA was radiolabeled. D. Bacteria can be transduced by phage.arrow_forwardThe drugs used against HIV in AIDS therapy are not effective against the flu because a. HIV is an RNA virus and influenza is a DNA virus. b. HIV is a DNA virus and influenza is an RNA virus. c. the two viruses have different-sized genomes. d. the proteins targeted by HIV drugs are not found in influenza.arrow_forward
- How is a fusion protein formed? a. Use CRISPR/Cas9 to remove a portion of the gene of interest, thereby creating a shorter protein b. Use site-directed mutagenesis to replace one sequence with another c. Use the yeast two hybrid technique to form a new hybrid protein d. Use recombinant DNA to ligate a cDNA in frame with another protein coding sequencearrow_forwardBacteriophages are viruses that infect bacteria. Depending on the bacteriophage, their genome can be made of either single or double stranded DNA or RNA. The composition of genetic material found in a bacteriophage is found to be 25% A, 33% T, 24% G, and 18% C. What can you conclude about the genetic material of this virus? a. It is double-stranded DNA. b. It is single-stranded DNA. c. It is single-stranded RNA. d. It is double-stranded RNA.arrow_forwardThe function of CRISPR gene cluster in Streptococcus pyogenes is to Select one or more: a. destroy phage DNA in the bacteria. O b. protect phage DNA in the bacteria. Oc. repair the damaged DNA in its genome. O d. delete the specific genes in its genome.arrow_forward
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