TLS Online TPP Program

#Id: 6997

#Unit 5. Developmental Biology

TLS Online TPP Program

#Id: 7500

#Unit 4. Cell Communication and Cell Signaling

Light-chain recombination occurs at the small pre-B-cell stage of B-cell development.

TLS Online TPP Program

#Id: 4667

#Unit 13. Methods in Biology

Scatchard plots are based on repeated equilibrium dialyses with a constant concentration of antibody and varying concentration of ligand. 

If all antibodies have the same affinity, then a Scatchard plot yields a straight line with a slope of Ka. The x intercept is n, the valency of the antibody, which is 2 for IgG and other divalent Igs. For IgM, which is pentameric, n  10, and for dimeric IgA, n  4. In this graph, antibody #1 has a higher affinity than antibody #2. .  

TLS Online TPP Program

#Id: 6166

#Unit 12. Applied Biology

B. thuringiensis is a spore forming bacterium, which produces a crystal protein as parasporic inclusion in the vegetative cell containing the spore.

TLS Online TPP Program

#Id: 407

#Unit 2. Cellular Organization

In Drosophila, the centromeric chromatin appears to consist of “hemisomes” containing one copy each of CenH3, H4, H2A, and H2B.