Microbiology with Diseases by Body System & Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System Package
1st Edition
ISBN: 9780133857122
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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Chapter 17, Problem 2TMW
A diagnostician used an ELISA to show that a newborn had antibodies against HIV in her blood. However, six months later, the same test was negative. How can this be?
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Chapter 17 Solutions
Microbiology with Diseases by Body System & Modified MasteringMicrobiology with Pearson eText -- ValuePack Access Card -- for Microbiology with Diseases by Body System Package
Ch. 17 - Prob. 1TMWCh. 17 - A diagnostician used an ELISA to show that a...Ch. 17 - To obtain immediate immunity against tetanus, a...Ch. 17 - Which of the following vaccine types is commonly...Ch. 17 - Prob. 3MCCh. 17 - When antigen and antibodies combine, maximal...Ch. 17 - An anti-antibody is used when _________. a. an...Ch. 17 - Prob. 6MCCh. 17 - Prob. 7MCCh. 17 - Prob. 8MC
Ch. 17 - Prob. 9MCCh. 17 - Prob. 10MCCh. 17 - Prob. 11MCCh. 17 - An antiserum is ________. a. an anti-antibody b....Ch. 17 - Prob. 13MCCh. 17 - Prob. 14MCCh. 17 - Prob. 15MCCh. 17 - Prob. 1MTFCh. 17 - Prob. 2MTFCh. 17 - Prob. 3MTFCh. 17 - Modified True/False 4. _________________ ELISA is...Ch. 17 - Prob. 5MTFCh. 17 - Match the characteristic in the first column with...Ch. 17 - Identify the chemicals represented by this artists...Ch. 17 - Prob. 2VICh. 17 - Compare and contrast the Chinese practice of...Ch. 17 - What are the advantages and disadvantages of...Ch. 17 - Compare the advantages and disadvantages of...Ch. 17 - How does precipitation differ from agglutination?Ch. 17 - Explain how a pregnancy test works at the...Ch. 17 - Compare and contrast herd immunity and contact...Ch. 17 - How does nephelometry differ from turbidimetry?Ch. 17 - Is it ethical to approve the use of a vaccine that...Ch. 17 - Which is worse: to use a diagnostic test for HIV...Ch. 17 - Discuss the importance of costs and technical...Ch. 17 - What bodily fluids, in addition to blood serum,...Ch. 17 - Why might a serological test give a false positive...Ch. 17 - Some researchers want to distinguish B cells from...Ch. 17 - Describe three ways by which genetic recombinant...Ch. 17 - How does a toxoid vaccine differ from an...Ch. 17 - Explain why many health organizations promote...Ch. 17 - Contrast a hemagglutination test with a viral...Ch. 17 - Prob. 11CTCh. 17 - Draw a picture showing, at both the molecular and...Ch. 17 - Prob. 1CM
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- What is the point to labeling a secondary antibody with a marker that can be visualized instead of just labeling the primary antibody?arrow_forward____________ are suspensions of killed or live germs which is employed to induce the production of antibodies and bring forth immunity.a) Vaccines b) Medicines c) Antibiotics d) Antigensarrow_forwardLet’s say there are two closely related viruses, let’s call them Guernsey virus and Micro virus. These two viruses only infect epithelial cells. Their surface antigens are sufficiently similar that there are a number of shared epitopes between the two viruses. Choose one of the following: A) If you get infected and successfully recover from one virus, it’s quite possible that you’ll have neutralizing antibodies against the other. B) If you get infected and successfully recover from one virus, you’ll still be susceptible to the other one because the antigens aren’t exactly the same. C) If you get infected and successfully recover from one virus, it’s likely that getting infected with the other virus will be worse because of the common phenomena of antibody-dependent enhancement. D) Not enough information has been given.arrow_forward
- If the patient's mother had previously vaccinated her son against chickenpox, what form of immunity would he have had against the virus? A) Active natural immunity B) Passive natural immunity C) Active artificial immunity D) Passive artificial immunityarrow_forwardAll of the following are true concerning the Alere HIV test except: a)this test can detect infection 10 days post exposure b)the presence of three lines on the test indicates a positive reaction for anitgen and antibody against HIV c)unlike Oraquick the test is run with blood sample only and not oral fluid d)the presence of a single line indicates that a person has antibodies but no antigen for HIV e)this is a test that is considered both a direct and indirect test for HIV diagnosisarrow_forwardA person with type A+ blood gets a transfusion with type O- blood. What is most likely to happen to the recipient? A) The recipient's blood will agglutinate (clump) due to the presence of natural antibodies in the recipient's blood. B) Nothing because the donor's blood is compatible with the recipient's blood. C) The recipient's blood will agglutinate (clump) due to the presence of natural antigens on the recipient's blood cells.arrow_forward
- When should the patient's newborn baby be tested for HIV, assuming she does not breastfeed? A) At birth B) 1 month of age C) At birth and 1 month of age D) Every 6 months for 3 yearsarrow_forwardA student in the immunology class who didn’t enroll in the lab, heard we had been studying IgY. A: How would you explain (using full sentences) IgY to them (Hint: tell them at least 3 things about it)? B: Explain both why could we see IgY in an egg, but not very much in a 3 week old chick?arrow_forwardWhen the ELISA test was conducted on an immune-suppressed person, he tested positive for a pathogen. (a) Identify the disease the patient is suffering from. (b) Name the causative entity. (c) Mention the cells of the body that are attacked by the pathogen.arrow_forward
- All of the following are used in a direct ELISA, except: A) Primary enzyme linked antibody B) Substrate C) Secondary enzyme linked antibody D) Primary antibodyarrow_forwardWhich, if any, of the following statements is incorrect?a) Each person makes many millions of different HLA proteins so as to be able to recognize and bind foreign antigens.b) Classical HLA proteins are highly polymorphic; non-classical HLA proteins show very limited polymorphism.c) Classical class I HLA proteins are displayed on the surface of very few cell types, notably immune system cells.d) HLA proteins are the most polymorphic human proteins.arrow_forwardBreast feeding provides which of the following to an infant?a) Artificial active immunityb) Artificial passive immunityc) Natural active immunityd) Natural passive immunityarrow_forward
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