Pregunta 1
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Which of the following cells is not involved with innate immunity?
Pregunta 2
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The first line of defense in innate immunity is
Pregunta 3
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Which of the following is a phagocytic monocyte that migrates out of the bloodstream?
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neutrophil
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macrophage
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phagosome
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none of the above
Pregunta 4
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The immune mechanism that provides a general defense by acting against anything recognized as nonself is termed adaptive immunity
Pregunta 5
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Interferon has been proven effective as a treatment against most cancers
Pregunta 6
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The complement cascade causes phagocytosis of the foreign cell that triggered it
Pregunta 7
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Natural killer cells are a group of lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses
Pregunta 8
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Molecular markers: [blank_start]antigen[blank_end]
Process used by complement to mark microbes for destruction by phagocytes cells: [blank_start]opsonization[blank_end]
Cytokine: [blank_start]interferon[blank_end]
Pattern-recognition receptors in the membranes of host cells: [blank_start]toll-like receptors[blank_end]
Second line of defense: [blank_start]phagocytes[blank_end]
Ability to activate an effective response to an antigen: [blank_start]immunocompetence[blank_end]
Must engage their target cells by direct contact to cause cell destruction: [blank_start]natural killer cells[blank_end]
Another term for innate immunity: [blank_start]non-specific[blank_end]
Major category of immune mechanism: [blank_start]innate immunity[blank_end]
Name given to each of about 20 inactive enzymes in the plasma and on cell surfaces: [blank_start]complement[blank_end]
Respuesta
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antigen
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opsonization
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interferon
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toll-like receptors
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phagocytes
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immunocompetence
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natural killer cells
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non-specific
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innate immunity
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complement
Pregunta 9
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Chemicals released from cells to trigger or regulate innate and adaptive responses are [blank_start]cytokines[blank_end].
Pregunta 10
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Natural killer cells are a group of [blank_start]lymphocytes[blank_end] that kill many types of tumor cells and cells infected with different types of viruses.
Pregunta 11
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The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is [blank_start]self[blank_end] [blank_start]tolerance[blank_end].
Pregunta 12
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Phagocytosis is a specific defense mechanism
Pregunta 13
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Diapedesis si the movement of neutrophils out of the bloodstream and around the tissue cells to the site of the injury
Pregunta 14
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Innate immunity is also knows as adaptive immunity
Pregunta 15
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Sebum and mucus are part of the body's first line of defense
Pregunta 16
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The primary cells involved in adaptive immunity are T cells and B cells
Pregunta 17
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B cells and T cells are examples of
Respuesta
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monocytes
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lymphocytes
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neturophils
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macrophages
Pregunta 18
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Cell-mediated immunity involves
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a. B cells
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b. T cells
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c. both a and b
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d. neither a or b
Pregunta 19
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The T cell subsets that are clinically important in diagnosing AIDS are
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a. CD4
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b. CD8
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c. neither a nor b
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d. both a and b
Pregunta 20
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The specific cells that secrete antibodies are
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B cells
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T cells
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plasma cells
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none of the above
Pregunta 21
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T cells are sensitized by
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direct exposure to an antigen
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presentation of an antigen by an antigen-presenting cell
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antibodies produced by B cells
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lymphokines
Pregunta 22
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Complement can best be described as
Pregunta 23
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The chemical messengers that T cells release into inflamed tissues are called
Respuesta
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pathogens
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cytokines
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lymphotoxins
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suppressor cells
Pregunta 24
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Antibodies are proteins of the family called [blank_start]immunoglobolins[blank_end]
Pregunta 25
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[blank_start]IgM[blank_end] is the predominant class of antibody produced after initial contact with an antigen
Pregunta 26
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The first vaccination was against the [blank_start]small[blank_end] [blank_start]pox[blank_end].
Pregunta 27
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Some vaccines use [blank_start]attenuated[blank_end] (weakened) pathogens.
Pregunta 28
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[blank_start]Active[blank_end] [blank_start]immunity[blank_end] generally lasts longer than passive immunity.
Pregunta 29
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Abnormal antigens or [blank_start]tumor[blank_end] [blank_start]markers[blank_end] are present in the plasma membranes of some cancer cells in addition to self-antigens.
Pregunta 30
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Helper T cells and suppressor T cells help regulate [blank_start]adaptive[blank_end] [blank_start]immunity[blank_end] function by regulating B cell and T cell function.
Pregunta 31
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A fetus receives protection from the mother through [blank_start]natural[blank_end] [blank_start]passive[blank_end] immunity.
Pregunta 32
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A vaccine provides [blank_start]artificial[blank_end] [blank_start]active[blank_end] immunity.
Pregunta 33
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T cells do which of the following?
Respuesta
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develop in the thymus
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form memory cells
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form plasma cells
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all of the above
Pregunta 34
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B cells do which of the following?
Pregunta 35
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Which of the following kills invading cells by drilling a hole in their plasma membrane?
Respuesta
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interferon
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complement
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antibody
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memory cell
Pregunta 36
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What is a rapidly growing population of identical cells that produce large quantities of specific antibodies called?
Respuesta
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complementary
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lymphotoxic
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chemotactic
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monoclonal
Pregunta 37
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Which of the following is a form of passive natural immunity?
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A child develops measles and acquires immunity to subsequent exposure
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Antibodies are injected into an infected individual
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An infant receives protection through its mother's milk
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Vaccination are given against smallpox
Pregunta 38
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Hypersensitivity of the immune system to an environmental antigen is known as an [blank_start]allergy[blank_end].
Pregunta 39
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Drugs used to relieve the symptoms of allergies are called [blank_start]antihistamine[blank_end].
Pregunta 40
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A [blank_start]lymphotoxin[blank_end] is a powerful poison that acts directly and quickly to kill any cell it attacks.
Pregunta 41
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Antibody-mediated immunity is sometimes referred to as [blank_start]humoral[blank_end] immunity.
Pregunta 42
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Antibodies are proteins of the family called [blank_start]immunoglobulins[blank_end].
Respuesta
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immunoglobulins
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lymphotoxins
Pregunta 43
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Complements attacks antigens by [blank_start]cytolysis[blank_end].
Respuesta
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cytolysis
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clonal deletion
Pregunta 44
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The chemical messengers released by T cells are called [blank_start]cytokines[blank_end].
Pregunta 45
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Vaccinations are [blank_start]active[blank_end] forms of gaining immunity.