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TLS Online TPP Program

#Id: 1556

The defining property of Wnt proteins is 22 cysteine residues, which form disulfide bridges that maintain a globular secondary structure.
 

#Unit 4. Cell Communication and Cell Signaling #Signal transduction pathways #Part B Pointers
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TLS Online TPP Program

#Id: 1975

#Unit 10. Ecological Principles

If this ratio R is equal to 1, then the population is randomly dispersed.

If R is significantly greater than 1, the population is evenly dispersed

If R is significantly less than 1, the population is clumped
TLS Online TPP Program

#Id: 8335

#Unit 2. Cellular Organization
TLS Online TPP Program

#Id: 3696

#Unit 2. Cellular Organization

Not all genes are essential. In yeast and flies, deletions of 50% of the genes have detectable effects
TLS Online TPP Program

#Id: 8115

#Unit 1. Molecules and their Interaction Relevant to Biology

Excreted S1P provokes many different cell and tissue effects, among them inflammation in allergic reactions, cell proliferation, angiogenesis, malignant transformation, and movement and migration of certain cells.
TLS Online TPP Program

#Id: 2449

#Unit 3. Fundamental Processes

In the absence of both activator and repressor, RNA polymerase occasionally binds the promoter spontaneously and initiates a low level (basal level) of transcription.