Hensen’s node is the functional equivalent of the organizer (dorsal lip of the amphibian blastopore)

TLS Online TPP Program

#Id: 2868

#Unit 13. Methods in Biology

The absorption of UV light by nucleic acids arises from n ® p* and p ® p* transitions of the purine and pyrimidine bases that occur between 260nm and 275 nm.

TLS Online TPP Program

#Id: 6410

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 1717

#Unit 4. Cell Communication and Cell Signaling

IgE binds two different receptors, the high-affinity FcεRI, which is responsible for most of the symptoms we associate with allergy, and the lower-affinity FcεRII, which regulates the production of IgE by B cells, as well as its transport across cells.

TLS Online TPP Program

#Id: 1820

#Unit 10. Ecological Principles

Population doubling time in exponential growth

TLS Online TPP Program

#Id: 7469

#Unit 5. Developmental Biology

Prestalk cells act as altruists which die for dispersion of kin cells.