EBK MICROBIOLOGY
EBK MICROBIOLOGY
12th Edition
ISBN: 8220100659720
Author: CASE
Publisher: PEARSON
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Chapter 19, Problem 4MCQ

Antibodies against HIV are ineffective for all of the following reasons except

  1. a. the fact that antibodies aren’t made against HIV.
  2. b. transmission by cell-cell fusion.
  3. c. antigenic changes.
  4. d. latency.
  5. e. persistence of virus particles in vacuoles.
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with HIV, explain the mechanism of intracellular infection and the role of reverse transcriptase. What would you explain about the process?  What is the significance of the CD4+ count? ( Discuss the meaning of various ranges of CD4 counts.) List 5 opportunistic infections AND describe data to suggest whether or not a patient has such an infection.
Identify the mismatched pair. a. CXCR4: lymphocyte tropic b. exogenous retrovirus: originates outside host’s body c. infectious virion production: activated CD4 T cells d. tat: controls export of transcripts from the nucleus e. lentivirus: long incubation period f. CCR5: macrophage tropic.
The four characteristics of adaptive immunity include all of the following except a. activation by a specific antigen. b. memory. c. production of clones of cells that have the same TCR or BCR. d. effective against a wide array of pathogens.

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