How Are Humans Able to Produce Billions of Unique B

question 36

Multiple Choice

How are humans able to produce billions of unique B and T cell receptors?

• A) Each time a pathogen is encountered, a new receptor is produced.
• B) The two different genes that encode receptor proteins allow for many versions of receptors to be produced.
• C) Random splicing of gene segments encoding receptor proteins allows for 2.5 billion potential combinations.
• D) Antigen-presenting cells stimulate B and T cells to each produce billions of receptor molecules.
• E) There are billions of B and T cells, each of which produces a single receptor on its cell surface.

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Definitions:

Respiratory Infection

An infection of the lungs, airways, or other structures involved in breathing, often caused by viruses or bacteria.

Nasotracheal Suctioning

A medical procedure that involves the insertion of a suction catheter into the nose and down the trachea to remove secretions from the lower airway.

Contraindications

Specific conditions or factors that serve as reasons to withhold a certain medical treatment due to the harm it would cause the patient.

Hemophilia

A genetic disorder characterized by the inability of blood to clot properly, leading to prolonged bleeding from even minor injuries.