Populational change is Darwin’s hypothesis that evolution occurs by changes in the proportions (frequencies) of different variant kinds of individuals within a population.

TLS Online TPP Program

#Id: 900

#Unit 13. Methods in Biology

T4 polynucleotide kinase (PNK) Transfers terminal phosphate groups from ATP to 5-OH groups.

TLS Online TPP Program

#Id: 1185

#Unit 7. System Physiology – Animal

The hyperpolarization of rod cells:

  Reduces the release of glutamate

  Generates a signal in the bipolar cells

  Leads to AP in ganglion cells 

TLS Online TPP Program

#Id: 3778

#Unit 1. Molecules and their Interaction Relevant to Biology

the atomic radii of chemical elements are a complicated task as the size of an atom is of the order of 1.2×10^-10m.

TLS Online TPP Program

#Id: 2814

#Unit 13. Methods in Biology

Proteins differ in the amount of hydrophobic amino acids that are present on their surface. This difference can be exploited in salt fractionation but can also be used in a higher resolution method using hydrophobic interaction chromatography (HIC).

TLS Online TPP Program

#Id: 9063

#Unit 4. Cell Communication and Cell Signaling

Phosphorylation of PKA at threonine-197 leads to conformational change in the activation loop, that promotes binding of both ATP and its substrate proteins.

PKA can autophosphorylate itself on T197