A covalent radius is one-half the distance between the nuclei of two identical atoms.

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#Id: 2538

#Unit 13. Methods in Biology

The original template sequence will also be copied during the second and all subsequent cycles to generate the 'long product'. Therefore, the long product continues to increase linearly, while the 'correct PCR' product will multiply exponentially. 

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#Id: 1547

#Unit 2. Cellular Organization

Taxol, 

A plant alkaloid from the Pacific yew tree

Binds microtubules and stabilizes them against depolymerization

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#Id: 722

#Unit 3. Fundamental Processes

Each eukaryotic chromosome contains a large number of replicons spaced unevenly throughout the chromosomes.

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#Id: 8019

#Unit 10. Ecological Principles

ECOLOGICAL RELEASE

Ecological release is the expansion of range, habitat, and/or  resource usage by an organism.

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#Id: 6759

#Unit 3. Fundamental Processes

PNPase a 3’ to 5’ exonucleases in E. coli, are unable to progress through double-stranded regions. Thus, the stem-loop structure at the 3’ end of many bacterial mRNAs protects the mRNA from direct 3’ attack.