mmune reaction that results from immediate hypersensitivities in which an antibody-mediated immune response occurs within minutes of exposure to a harmless antigen

speciation that occurs via geographic separation

polyploidy formed between two related, but separate species

inhibition by a binding event at a site different from the active site, which induces a conformational change and reduces the enzyme's affinity for its substrate

endocrine cell of the pancreatic islets that produces the hormone glucagon

 type of secondary structure of proteins formed by folding of the polypeptide into a helix shape with hydrogen bonds stabilizing the structure

change of the set point in a homeostatic system

life-cycle type in which the diploid and haploid stages alternate

duct that extends from the terminal bronchiole to the alveolar sac

structure consisting of two or more alveoli that share a common opening

how much air is in the alveoli

(plural: alveoli) (also, air sac) terminal region of the lung where gas exchange occurs

neurodegenerative disorder characterized by problems with memory and thinking

monomer of a protein; has a central carbon or alpha carbon to which an amino group, a carboxyl group, a hydrogen, and an R group or side chain is attached; the R group is different for the most common 20 amino acids.

hormone derived from amino acids