(C) Unconventional Dose-Response Curve

question 2

Multiple Choice

(c) Unconventional dose-response curve
Use the accompanying figure to answer the following question.
-The flat line at the left in (b) probably represents __________________.

• A)no visible effect because the body's physiological processes can cope with low doses of a toxicant
• B)that no data were collected for the flatline area
• C)competing effects of some other substance whose effect wasn't measured
• D)the fact that no toxicant was introduced until the response line begins to rise
• E)the fact that there is no physiological effect of the toxicant at low doses

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Definitions:

Autoimmune Diseases

Conditions where the immune system mistakenly attacks the body's own cells, leading to inflammation and tissue damage.

Antibodies

Substances created by the immune system to detect and render harmless external threats like viruses and bacteria.

Passive Artificial Immunity

Immunity acquired by the transfer of antibodies from another individual, as happens through injection or maternal transfer.

Temporary Immunity

Immunity that is acquired quickly and lasts for a short period, either through the injection of antibodies from another person or animal, or by receiving maternal antibodies through the placenta or breast milk.