Members of the Poaceae family use benzoxazinoids an alkaloids derived from tryptophan as constitutively produced defensive secondary metabolites. 

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#Id: 471

#Unit 2. Cellular Organization

Exon sequences are conserved by the negative selection of individuals in which the sequences have changed

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#Id: 5203

#Unit 7. System Physiology – Animal

von Willebrand factor deficiency likewise causes a bleeding disorder (von Willebrand disease) by reducing platelet adhesion and by lowering plasma factor VIII

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#Id: 526

#Unit 2. Cellular Organization

The length of Introns is variable while exons are almost constant in length.

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#Id: 10215

#Unit 6. System Physiology – Plant

F-box proteins called KISS ME DEADLY (KMD) proteins

negatively regulates the cytokinin response by targeting type-B ARR proteins for degradation via the E3 ubiquitin ligase complex, SCF-KMD

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#Id: 10028

#Unit 4. Cell Communication and Cell Signaling

In certain immune cells, NF-κB stimulates expression of iNOS (inducible isoform of the enzyme that produces NO), which is toxic to bacterial cells