80353
Description
Quiz by Sami-Jaine, updated more than 1 year ago
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Created by Sami-Jaine
almost 11 years ago
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Question 1
Question
In carcinogenesis...
Initiation _____ Progression
Answer
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Promotion
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Prominent
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Prometric
Question 2
Question
Altered DNA bases (mutations) are the basis of cellular changes that cause cancer. True or False?
Answer
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True
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False
Question 3
Question
"New Growth" - abnormal and continued growth of cells which are no longer subject to homeostatic controls typical or normal tissue... this definition best describes...
Answer
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Oncogene
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Neoplasm
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Leukaemia
Question 4
Question
Which 3 of the following influences Tumour Growth Rate?
Answer
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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)
Question 5
Question
"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?
Answer
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Autoimmunity
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Cancer
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Tolerance
Question 6
Question
Peripheral tolerance occurs in...
Answer
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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
Question 7
Question
Self Tolerance describes....
Answer
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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
Question 8
Question
Two signals are required for full T cell activation. What are the sources of these signals?
Answer
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The Antigen
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The MHC
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The APC
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The YMCA
Question 9
Question
Which of the following are features of Central Tolerance?
Answer
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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
Question 10
Question
"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?
Answer
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Immune Surveillance Theory
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Carcinogenesis
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Mutagenic effect
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