When the cholinergic vagal fibers to nodal tissue are stimulated, the membrane becomes hyperpolarized and the slope of the prepotentials is decreased

TLS Online TPP Program

#Id: 3687

#Unit 2. Cellular Organization

Pathogenicity islands GC content often differs from that of the rest of the genome, and it is likely that these regions are spread among bacteria by a process of horizontal transfer.

TLS Online TPP Program

#Id: 5845

#Unit 10. Ecological Principles

Complete restoration - Conservationists attempt to return a habitat to its condition prior to the disturbance. 

TLS Online TPP Program

#Id: 8954

#Unit 11. Evolution and Behavior

As a chromosome with a new gene duplicate spreads through a population, there is polymorphism in the number of copies of the gene that individuals carry. This situation, called copy number variation.

TLS Online TPP Program

#Id: 7490

#Unit 4. Cell Communication and Cell Signaling

P nucleotide addition results when the DNA hairpin at the coding joint is cleaved asymmetrically.

TLS Online TPP Program

#Id: 2337

#Unit 3. Fundamental Processes

DskA is required for the regulation of rrn  transcription by these two small molecules. Indeed, rrn  transcription is insensitive to iNTP and ppGpp in mutants lacking DskA.