Autoimmune diseases are different from diseases caused by pathogens because in all autoimmune diseases
A - VCE - SSCE Biology - Question 19 - 2015 - Paper 1
Question 19
Autoimmune diseases are different from diseases caused by pathogens because in all autoimmune diseases
A. certain self-tissues are not recognised as 'self' and this ... show full transcript
Worked Solution & Example Answer:Autoimmune diseases are different from diseases caused by pathogens because in all autoimmune diseases
A - VCE - SSCE Biology - Question 19 - 2015 - Paper 1
Step 1
A. certain self-tissues are not recognised as 'self' and this causes an immune response to the tissues.
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Answer
This statement accurately describes a key characteristic of autoimmune diseases. In autoimmune disorders, the immune system mistakenly identifies the body's own tissues as foreign and mounts an immune response against them, leading to tissue damage.
Step 2
B. histamine is released from mast cells to cause an inflammatory response.
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Answer
While histamine release does play a role in the inflammatory response, this mechanism is more commonly associated with allergic reactions rather than the specific mechanisms of autoimmune diseases.
Step 3
C. complement protein causes the breakdown of healthy cells.
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This statement is misleading. Complement proteins can contribute to the immune response and can attack healthy cells, but they are not a defining mechanism of all autoimmune diseases.
Step 4
D. interferon is released to kill infected tissue.
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Interferons are primarily involved in the antiviral response, and while they play a role in immune modulation, they are not specifically released in the context of autoimmune diseases.
