BIOL 204 Lecture Exam 2 St Cloud State University Questions and Answers
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Course
BIOL 204
Institution
BIOL 204
Viral infections can usually be treated with antibiotics. True or false?
Answer> False
Antibody functions include all of the following except:
A. targeting foreign cells so that complement proteins can cause cellular lysis
B. linking soluble antigens together so that they fall out of soluti...
BIOL 204 Lecture Exam 2 St Cloud State University Questions and Answers Viral infections can usually be treated with antibiotics. True or false? Answer > False Antibody functions include all of the following except: A. targeting foreign cells so that complement proteins can cause cellular lysis B. linking soluble antigens together so that they fall out of solution C. binding and inactivating chemical toxins released by bacteria or other microorganisms D. cross -linking cell -bound antigens on red blood cells when blood types are properly matched Answer> D. cross -linking cell -bound antigens on red blood cells when blood types are properly matched Viral-infected human cells often send out special proteins that serve as an early warning system to uninfected cells. In response, the uninfected cells de velop antiviral proteins that protect them. The early warning proteins sent out by viral-infected cells are: A. complement B. antigens C. interferon D. antibodies Answer > C. interferon Cytotoxic T cells: A. self destruct once the antigen has been neutral ized B. function mainly to stimulate the proliferation of other T cell populations C. are the only T cells that can directly attack and kill other cells D. require the double recognition signal of MHC I plus MHC II on the target cell in order to function Answer > C. are the only T cells that can directly attack and kill other cells Passive immunity differs from active immunity in that passive immunity: A. results in the production of memory cells B. causes long -term immunity C. results in the production o f antibodies D. involves the administration of preformed antibodies Answer > D. involves the administration of preformed antibodies Innate immune system defenses include: A. plasma cells B. T cells C. phagocytosis D. B cells Answer > C. phagocytosis Which of the following is characteristic of T lymphocytes but not B lymphocytes? A. cell -mediated immunity B. production of antibodies C. production of plasma cells D. maturation in the red bone marrow Answer > A. cell -mediated immunity Select the correct statement about complement: A. complement can be activated through three pathways: classical, secondary, and alternate B. complement proteins C1 through C9 act exclusively in the classical pathway C. the membrane attack complex consists of complement pro teins C3a through C5 D. a specific immune mechanism is often involved in directing complement to its target Answer > D. a specific immune mechanism is often involved in directing complement to its target Which of the following is associated with the speci fic defenses of the body?
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