TLS Online TPP Program

#Id: 8094

#Unit 1. Molecules and their Interaction Relevant to Biology

Platelet-activating factor has a long ether-linked alkyl chain at C-1 of glycerol, but C-2 is ester-linked to acetic acid, which makes the compound much more water-soluble than most glycerophospholipids and plasmalogens.

TLS Online TPP Program

#Id: 1912

#Unit 4. Cell Communication and Cell Signaling

T1 cells are mIgMhi, mIgD -/lo, CD21-, CD23-, CD24+, and CD93+.  T2 cells differ from T1 cells in having higher levels of mIgD and in expressing CD21 and CD23.

TLS Online TPP Program

#Id: 5909

#Unit 3. Fundamental Processes

A common feature of all DNA polymerases is that they cannot initiate synthesis of a chain of DNA de novo, but can only elongate a chain.

TLS Online TPP Program

#Id: 8253

#Unit 1. Molecules and their Interaction Relevant to Biology

Spontaneous (or instantaneous) dipoles

When groups of electrons move to one end of the atom, it creates a dipole. 

TLS Online TPP Program

#Id: 2460

#Unit 13. Methods in Biology

During electrophoresis generation of heat is the major problem which leads to

ncreased rate of diffusion of sample and buffer ions.

Thermal instability which include denaturation of proteins.

A decrease of buffer viscosity.

Convection current leads mixing of separated samples