A more attractive alternative is to cover the reaction mixture with a plug of inert wax and place the critical reagent on top of this plug. 

TLS Online TPP Program

#Id: 8862

#Unit 2. Cellular Organization

In vertebrates, stabilization of cohesins requires the cohesin-associated factor sororin.

TLS Online TPP Program

#Id: 6156

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 2662

#Unit 7. System Physiology – Animal

The tubular fluid that leaves the thick ascending limb has a lower Na+ concentration and a lower osmolarity than blood.

TLS Online TPP Program

#Id: 7752

#Unit 1. Molecules and their Interaction Relevant to Biology

Electron affinity: The enthalpy change that results from adding an electron to a gaseous atom.

Electron affinity is becoming less negative (less exothermic) and less likely to gain an electron. 

TLS Online TPP Program

#Id: 945

#Unit 5. Developmental Biology

SAP in the egg jelly of the sea urchin Arbacia punctulata 

Resact (14-amino acid chemotactic peptide)