The light-mediated increase of pH and the concentration of Mg2+ activate enzymes of the Calvin–Benson cycle that require Mg2+ for catalysis and are more active at pH 8 than at pH 7: rubisco, fructose 1,6-bisphosphatase, sedoheptulose 1,7-bisphosphatase, and phosphoribulokinase.  The modifications of ionic composition of the chloroplast stroma are reversed rapidly upon darkening.

TLS Online TPP Program

#Id: 7037

#Unit 11. Evolution and Behavior

Darwin’s evolutionary theory - Evolution as such is the simple proposition that the characteristics of organisms change over time. 

Geometric increase 

Limited food & Space

Struggle for existence 

Variation 

Natural selection

Inheritance of useful characters

Speciation 

TLS Online TPP Program

#Id: 710

#Unit 3. Fundamental Processes

Deletion of dat causes initiation to occur more frequently. This significantly increases the amount of DnaA available to the origin

TLS Online TPP Program

#Id: 8614

#Unit 2. Cellular Organization

Two inhibitory phosphorylations on CDK play a critical role in controlling CDK activity:

Y15

T14

TLS Online TPP Program

#Id: 9617

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 2559

#Unit 13. Methods in Biology

Cyclization between Ser and Gly is probably rapid, and the oxidation of the Tyr side chain (by O2) is probably the rate-limiting step of fluorophore generation.