BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 26, Problem 6U
Summary Introduction
Introduction: HIV refers to the human immunodeficiency virus that causesacquired immunodeficiency syndrome(AIDS) in humans. This virus attacks the immune system of the body and interferes with the body’s ability to fight against infections.
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People with the CCR5Δ32 mutation of a T-cell surface protein can be exposed to some strains of HIV-1 without becoming sick. What step of the virus life cycle is likely to be inhibited with this mutation? a. Release b. Reverse transcription c. Uncoating d. Attachment
Once Tfh cells have been activated against vaccine delivered intramuscularly which Constant (C) region will be juxtaposed to the
VDJ region to produce antibody with high affinity viral-neutralising capacity in the tissues?
a. Cy b. Ca c. Cụ d. Cɛ
Why must antibody treatments like ZMapp be composed of monoclonal antibodies instead of polyclonal antibodies?
a. Therapeutic antibodies must all bind the same epitope.
b. Therapeutic antibodies must NOT all bind the same epitope.
c. Monoclonal antibodies have much higher binding affinity than polyclonal antibodies.
d. Monoclonal antibodies have much lower binding affinity than polyclonal antibodies.
e. Monoclonal antibodies can be produced indefinitely; polyclonal antibodies can only be produced for a short time.
IS it B? Can you please explain
Chapter 26 Solutions
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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- 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 c.missense mutation d.frame shift mutationarrow_forwardThe use of multiple drugs in HAART to treat AIDS has a. completely removed the virus from infected individuals. b. reduced the viral level in the bloodstream to undetectable levels. c. been a complete failure. d. been supplanted by the new HIV vaccine.arrow_forwardWhich part of the SARS-CoV2 virus is produced by your immune system in response to the Pfizer or Moderna vaccine? a. Viral RNA b. Viral DNA c. Spike Protein d. Envelope Protein e. Membrane Proteinarrow_forward
- Which receptors of the influenza virus are responsible for binding tothe host cell?a. hemagglutinin b. neuraminidase c. type A d. capsid proteinsarrow_forwardBrefiefly summarize how each type of vaccine triggers an immune response (Remeber that the immune system responds specifically to antigens) A. Inactive whole virus b. Antigen proteins c. mRNA (genetic instructions) d. DNA (genetic instructiions)arrow_forwardA researcher discovers that a breed of rabbits have antibodies that can neutralize HIV. The researcher decides to extract the antibody concentrated plasma and deliver it to a patient with HIV. What would you likely expect to see? a. The HIV patient will now have a fighting chance to eliminate HIV as the antibodies will not discriminate and bind to the same viral antigenic determinants. b. The HIV patient will form antibodies against the rabbit serum antibodies. c. The rabbit antibodies will opsonize the HIV antigenic determinants on the MHC II. d. The rabbit antibodies will never work because HIV in humans are different than HIV in rabbits.arrow_forward
- Select a drug or drugs that can prevent a viral nucleic acid from beingreplicated.a. retrovir b. acyclovir c. saquinavir d. both a and barrow_forwardWhich of the following is a trait that both HPV and HIV share? A.Both have an RNA genome B.Both undergo reverse transcription C.Both integrate into the genome D.Both can cause cancerarrow_forwardWhich Class I element has likely experienced the greatest accumulation of mutations compared to its retrovirus ancestor, as its DNA sequence is the most divergent? A. LINES B. transposons C. Ac/Ds elements D. SINES E. LTR retrotransposonsarrow_forward
- Which of the following virus does not use CXCR4 as a receptor? a. HIV-2 b. SIV c. poliovirus d. HIV-1arrow_forwardWhat do Creutzfeldt-Jakob and mad cow disease have in common?a. Both are fatal diseases.b. Both are caused by prions.c. Both cause spongiform changes in the brain.d. All of these are correct.arrow_forwardWhich of the following is the most likely explanation for an individual who lacks CCR5 as a result of a homozygous defect in the CCR5 gene becoming infected with HIV? a. The mutated CCR5 genes reverted to the normal form, rendering macrophages susceptible to macrophagetropic HIV variants. b. The macrophage-tropic HIV variant entered host cells using CD4 alone. c. The viral nucleic acid alone was taken up by cells, as in cell transformation by bacterial DNA. d. The individual had received a transplant of HIV-infected cells expressing normal CCR5. e. The primary infection involved a lymphocyte-tropic strain of HIV that used CXCR4 as its co-receptor.arrow_forward
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