Questão 1
Questão
Which of the following cells is not involved with innate immunity?
Questão 2
Questão
The first line of defense in innate immunity is
Questão 3
Questão
Which of the following is a phagocytic monocyte that migrates out of the bloodstream?
Responda
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neutrophil
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macrophage
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phagosome
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none of the above
Questão 4
Questão
The immune mechanism that provides a general defense by acting against anything recognized as nonself is termed adaptive immunity
Questão 5
Questão
Interferon has been proven effective as a treatment against most cancers
Questão 6
Questão
The complement cascade causes phagocytosis of the foreign cell that triggered it
Questão 7
Questão
Natural killer cells are a group of lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses
Questão 8
Questão
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]
Responda
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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
Questão 9
Questão
Chemicals released from cells to trigger or regulate innate and adaptive responses are [blank_start]cytokines[blank_end].
Questão 10
Questão
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.
Questão 11
Questão
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].
Questão 12
Questão
Phagocytosis is a specific defense mechanism
Questão 13
Questão
Diapedesis si the movement of neutrophils out of the bloodstream and around the tissue cells to the site of the injury
Questão 14
Questão
Innate immunity is also knows as adaptive immunity
Questão 15
Questão
Sebum and mucus are part of the body's first line of defense
Questão 16
Questão
The primary cells involved in adaptive immunity are T cells and B cells
Questão 17
Questão
B cells and T cells are examples of
Responda
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monocytes
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lymphocytes
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neturophils
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macrophages
Questão 18
Questão
Cell-mediated immunity involves
Responda
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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
Questão 19
Questão
The T cell subsets that are clinically important in diagnosing AIDS are
Responda
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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
Questão 20
Questão
The specific cells that secrete antibodies are
Responda
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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
Questão 21
Questão
T cells are sensitized by
Responda
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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
Questão 22
Questão
Complement can best be described as
Questão 23
Questão
The chemical messengers that T cells release into inflamed tissues are called
Responda
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pathogens
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cytokines
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lymphotoxins
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suppressor cells
Questão 24
Questão
Antibodies are proteins of the family called [blank_start]immunoglobolins[blank_end]
Questão 25
Questão
[blank_start]IgM[blank_end] is the predominant class of antibody produced after initial contact with an antigen
Questão 26
Questão
The first vaccination was against the [blank_start]small[blank_end] [blank_start]pox[blank_end].
Questão 27
Questão
Some vaccines use [blank_start]attenuated[blank_end] (weakened) pathogens.
Questão 28
Questão
[blank_start]Active[blank_end] [blank_start]immunity[blank_end] generally lasts longer than passive immunity.
Questão 29
Questão
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.
Questão 30
Questão
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.
Questão 31
Questão
A fetus receives protection from the mother through [blank_start]natural[blank_end] [blank_start]passive[blank_end] immunity.
Questão 32
Questão
A vaccine provides [blank_start]artificial[blank_end] [blank_start]active[blank_end] immunity.
Questão 33
Questão
T cells do which of the following?
Responda
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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
Questão 34
Questão
B cells do which of the following?
Questão 35
Questão
Which of the following kills invading cells by drilling a hole in their plasma membrane?
Responda
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interferon
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complement
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antibody
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memory cell
Questão 36
Questão
What is a rapidly growing population of identical cells that produce large quantities of specific antibodies called?
Responda
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complementary
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lymphotoxic
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chemotactic
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monoclonal
Questão 37
Questão
Which of the following is a form of passive natural immunity?
Responda
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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
Questão 38
Questão
Hypersensitivity of the immune system to an environmental antigen is known as an [blank_start]allergy[blank_end].
Questão 39
Questão
Drugs used to relieve the symptoms of allergies are called [blank_start]antihistamine[blank_end].
Questão 40
Questão
A [blank_start]lymphotoxin[blank_end] is a powerful poison that acts directly and quickly to kill any cell it attacks.
Questão 41
Questão
Antibody-mediated immunity is sometimes referred to as [blank_start]humoral[blank_end] immunity.
Questão 42
Questão
Antibodies are proteins of the family called [blank_start]immunoglobulins[blank_end].
Responda
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immunoglobulins
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lymphotoxins
Questão 43
Questão
Complements attacks antigens by [blank_start]cytolysis[blank_end].
Responda
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cytolysis
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clonal deletion
Questão 44
Questão
The chemical messengers released by T cells are called [blank_start]cytokines[blank_end].
Questão 45
Questão
Vaccinations are [blank_start]active[blank_end] forms of gaining immunity.