The Ames test uses a strain of S. typhimurium that is mutant for the operon responsible for the biosynthesis of the amino acid histidine.

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#Unit 6. System Physiology – Plant

SA accumulation leads to enhanced local ROS production.

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#Unit 6. System Physiology – Plant

GA levels in plants are correlated with stem length, internode elongation and seed germination

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#Unit 3. Fundamental Processes

pri-miRNA is processed in a two-step reaction

The first step is catalyzed by Drosha, an RNase III superfamily member endonuclease, in the nucleus. Drosha reduces the pri-RNA to about a 70-bp, hairpin-shaped precursor fragment, pre-miRNA

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#Unit 2. Cellular Organization

APC/C works with substrate-targeting factors called Cdc20 and Cdh1

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#Unit 10. Ecological Principles

Crude density-Total number of individual divided by total area.