BIOLOGY: CONCEPTS&INVEST. (LL)
BIOLOGY: CONCEPTS&INVEST. (LL)
5th Edition
ISBN: 9781264706983
Author: Hoefnagels
Publisher: MCG
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Chapter 34, Problem 5MCQ
Summary Introduction

Introduction:

The effector cytotoxic T cells kill the infected foreign cells in the body by binding to the cell receptor of the T cells and secreting proteins called as the perforins which are toxic and cause the degradation and death of the infected bacterial cells.

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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
Which event happens first during cytotoxic T-cell activation? a. Cytotoxic T cells secrete perforin and granzyme. b. Cytotoxic T cells recognize foreign antigen presented on the surface of a MHC I molecule. c. Cytotoxic T cells proliferate to form many new cells specific for the same antigen d. Cytotoxic T cells recognize foreign antigen presented on the surface of a TCR.
Explain why each choice (a-d) is correct or incorrect.  Which statement is true about T cells? a. They usually directly recognize antigens, which then activates a subpopulation of killer cells b. Their proliferation is enhanced by interleukins 1 and 2. c. Once activated, they cannot secrete cytokines. d. They will develop into cytotoxic T cells if antigen is complexed with class II MHC proteins.

Chapter 34 Solutions

BIOLOGY: CONCEPTS&INVEST. (LL)

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