The propagule pressure hypothesis suggests invasives produce more progeny than some native species.

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#Id: 4629

#Unit 13. Methods in Biology

A number of enzymes have been employed for ELISA, including alkaline phosphatase, horseradish peroxidase, and -galactosidase. These assays approach the sensitivity of RIAs and have the advantage of being safer and less costly.

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#Id: 4762

#Unit 5. Developmental Biology

In mex-3-deficient mutants, PAL-1 is seen in every blastomere.

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#Id: 7966

#Unit 2. Cellular Organization

Binding of BiP to the luminal domain of monomeric Ire1 prevents formation of the Ire1 dimer.

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#Id: 5480

#Unit 7. System Physiology – Animal

ACh is formed from acetyl coenzyme A (acetyl CoA) and choline by the action of the enzyme choline acetyltransferase

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#Id: 4006

#Unit 7. System Physiology – Animal

The SA node exhibits automaticity; it can spontaneously generate action potentials without neural input.