Question

Which of the following molecules is incorrectly paired with its source?

• A. Lysozyme-gastric juices
• B. Histamine-injured cells
• C. lnterferons-virus infected cells
• D. Immunoglobulins-plasma cells

Answer 1

The correct option is A Lysozyme-gastric juices

Histamine is an organic nitrogenous compound involved in local immune responses, as well as regulating physiological function in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus. Histamine is involved in the inflammatory response and has a central role as a mediator of itching.

Interferons (IFNs) are a group of signaling proteins made and released by host cells in response to the presence of several viruses. In a typical scenario, a virus-infected cell will release interferons causing nearby cells to heighten their anti-viral defenses.

Immunoglobulins, also known as antibodies, are glycoprotein molecules produced by plasma cells (white blood cells).

Lysozyme is a special enzyme found in tears, saliva, sweat, and other body fluids. Other mucosal linings, such as the nasal cavity, also contain lysozyme. It destroys bacteria that attempt to enter our body through these passageways. In the case of tears, they protect our eyes from bacterial invaders.

So, the correct option is 'Option A'.