An anterior-to-posterior gradient of Erk signaling functions as a positive inducer of head specification

TLS Online TPP Program

#Id: 1168

#Unit 7. System Physiology – Animal

GFR is measured by the clearance of a glomerular marker.

TLS Online TPP Program

#Id: 9221

#Unit 6. System Physiology – Plant

2-phosphoglycolate is an inhibitor of two chloroplast enzymes: triose phosphate isomerase and phosphofructokinase.

TLS Online TPP Program

#Id: 2928

#Unit 13. Methods in Biology

Nomograph for the determination of the relative centrifugal fi eld for a given rotor
speed and radius. The three columns represent the radial distance (in mm), the relative
centrifugal fi eld and the rotor speed rpm (in min-1).

TLS Online TPP Program

#Id: 7693

#Unit 1. Molecules and their Interaction Relevant to Biology

                                                           aa motif / Coiled-coils

Two helices are wound around each other

Alpha-helices are packed together through the hydrophobic interactions

These two helices are found to be stable in solution

They are generally found in transcription factors and intermediate filaments

They have heptad (7 amino acid) repeated sequences


TLS Online TPP Program

#Id: 8237

#Unit 10. Ecological Principles

Area- and volume-based surveys, Surveys that define the boundaries of an area or volume and then count all the individuals in the space