80353
Descripción
Test por Sami-Jaine, actualizado hace más de 1 año
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Creado por Sami-Jaine
hace más de 11 años
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Pregunta 1
Pregunta
In carcinogenesis...
Initiation _____ Progression
Respuesta
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Promotion
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Prominent
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Prometric
Pregunta 2
Pregunta
Altered DNA bases (mutations) are the basis of cellular changes that cause cancer. True or False?
Respuesta
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True
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False
Pregunta 3
Pregunta
"New Growth" - abnormal and continued growth of cells which are no longer subject to homeostatic controls typical or normal tissue... this definition best describes...
Respuesta
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Oncogene
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Neoplasm
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Leukaemia
Pregunta 4
Pregunta
Which 3 of the following influences Tumour Growth Rate?
Respuesta
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The rate new cells replace old cells
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Space
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Blood Supply
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Hormone levels (hormone-dependent tumours)
Pregunta 5
Pregunta
"A type of specific unresponsiveness to an antigen. It is induced but the exposure of specific lymphocytes to that antigen"
What does this best describe?
Respuesta
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Autoimmunity
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Cancer
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Tolerance
Pregunta 6
Pregunta
Peripheral tolerance occurs in...
Respuesta
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lymph nodes
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lymph follicles in tonsils, payer's patches, spleen, adenoids, skin
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arms, legs, hands and feet
Pregunta 7
Pregunta
Self Tolerance describes....
Respuesta
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A normal individual who is tolerant of their own antigens
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An autoimmune individuals who is tolerant of their own antigens
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A normal individual who is tolerant of foreign antigens
Pregunta 8
Pregunta
Two signals are required for full T cell activation. What are the sources of these signals?
Respuesta
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The Antigen
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The MHC
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The APC
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The YMCA
Pregunta 9
Pregunta
Which of the following are features of Central Tolerance?
Respuesta
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Apoptotic cell death
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In the thyroid and bone marrow
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Deleting those immature cells that have a strong affinity for self antigens
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Negative Selection
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In the thymus and bone marrow
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No apoptosis occurs
Pregunta 10
Pregunta
"The immune system constantly looks for abnormal cells, eliminating cancer cells that arise. Some cancer cells may evade this immune system process and develop into tumours."
What does this describe?
Respuesta
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Immune Surveillance Theory
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Carcinogenesis
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Mutagenic effect
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