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Cancer & Autoimmune Disease: Quiz the Second
BSc (Hons) Biology Quiz on Cancer & Autoimmune Disease: Quiz the Second, created by Sami-Jaine on 09/05/2013.
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In carcinogenesis... Initiation _____ Progression
Altered DNA bases (mutations) are the basis of cellular changes that cause cancer. True or False?
"New Growth" - abnormal and continued growth of cells which are no longer subject to homeostatic controls typical or normal tissue... this definition best describes...
Which 3 of the following influences Tumour Growth Rate?
The rate new cells replace old cells
Hormone levels (hormone-dependent tumours)
"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?
Peripheral tolerance occurs in...
lymph follicles in tonsils, payer's patches, spleen, adenoids, skin
arms, legs, hands and feet
Self Tolerance describes....
A normal individual who is tolerant of their own antigens
An autoimmune individuals who is tolerant of their own antigens
A normal individual who is tolerant of foreign antigens
Two signals are required for full T cell activation. What are the sources of these signals?
Which of the following are features of Central Tolerance?
Apoptotic cell death
In the thyroid and bone marrow
Deleting those immature cells that have a strong affinity for self antigens
In the thymus and bone marrow
No apoptosis occurs
"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?
Immune Surveillance Theory
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