The release of ________ during a type I hypersensitivity reaction contributes to swelling.

A. histamine
B. prostaglandins
C. leukotrienes
D. both histamines and leukotrienes
E. both proteases and prostaglandins


Answer: D

Biology & Microbiology

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Which of the following lung volumes change during exercise?

a. residual volume b. tidal volume c. vital capacity d. lung capacity e. lung volume

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Single nucleotide polymorphisms (SNPs) are organized into blocks called ____ and are inherited together

a. haplotypes b. chromosome assemblies c. DNA assemblies d. multifactorial genes e. threshold groups

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During the last few years, scientists have observed that caribou have had difficulty migrating due to the melting of the ________, creating impassable wetlands where there was once solid ground

A) glaciers B) ice caps C) icebergs D) permafrost

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If the pH of a solution is decreased from 7 to 6, it means that the:

a. concentration of the H+ has decreased to 1/10 of what it was b. concentration of the H+ has increased to 10 times what it was c. concentration of OH- has increased to 10 times what it was d. concentration of the OH- has increased by 1/7 of what it was e. solution has become more basic

Biology & Microbiology