The Chemical Mediator That Causes Prolonged Bronchospasm, Vascular Permeability, and Mucus

question 14

Multiple Choice

The chemical mediator that causes prolonged bronchospasm, vascular permeability, and mucus secretion of asthmatic patients is ______.

• A)histamine
• B)leukotriene
• C)platelet-activating factor
• D)serotonin
• E)prostaglandin

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Definitions:

Transgenic

Refers to a genetically modified organism that carries a gene from a different species.

Probe

Short fragment of DNA labeled with a tracer; designed to hybridize with a nucleotide sequence of interest.

Polymerase Chain Reaction (PCR)

Laboratory method that rapidly generates many copies of a specific section of DNA.

DNA Sequencing

The process of determining the precise order of nucleotides within a DNA molecule, critical for genetic research and diagnostics.