Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Question
What factors lead to a comprised immune system with HIV?
Group of answer choices
A)High viral load and high T-cell counts
B)Low viral load and high T-cell counts
C)High viral load and low T-cell counts
D)Low viral load and low T-cell counts
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- Consider the events that occur in HIV infection. I. HIV undergoes molecular self assembly.II. The protein gp120 binds to CD4.III. The HIV genome is incorporated into the host cell genome.IV. Reverse transcriptase is activated.V. The lipid envelope of HIV fuses with the T cell membrane. What is the correct sequence of the numbered events? I > III > V > IV > II IV > II > I > V > III II > V > IV > III > I III > I > II > IV > Varrow_forwardPractice q7 -What is the function of the adaptive immune system? a)provide an immediate and specific response to microbes b)Provides a delayed and specific response to microbes c)Provides a delayed but non specific response to microbes d)Provides an immediate but non specific response to microbes Practice q8 -How does the immune system recognize virally infected cells? a)T cells stick to MHC molecules carrying viral protein b)B cells stick to MHC molecules carrying viral protein c)T cells sticks to MHC molecules carrying viral DNAarrow_forwardHerd immunity means that the entire population (not just those who are vaccinated) are protected from a disease. What is one way that herd immunity protects an unvaccinated person (such as an infant who is too young to be vaccinated or a person who is immunocompromised)?arrow_forward
- How can an extracellular bacterium and an intracellular virus independently be targeted by a particular T cell response? And what is the mechanism of antigen presentation?arrow_forwardThis term describes an antigen that is too small to be immunogenic, however it binds to proteins in the body to increase its size, allowing it to then be able to trigger an immune reaction: O 1) hapten O 2) alloantigen 3) superantigen O 4) epitopearrow_forward4. The variable region can be found in Fab B). Fc C). CL D). TLR E). A, B and C 5. Which event primarily takes place in the thymus? A). Production of thyroid hormone B). Clonal expansion C). Antigen activation of lymphocytes D). Development of memory cells E). None of the above.arrow_forward
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