TLS Online TPP Program

#Id: 1998

#Unit 3. Fundamental Processes

The rapid phase requires the binding of multiple copies of a poly(A)-binding protein containing the RRM motif 

TLS Online TPP Program

#Id: 855

#Unit 2. Cellular Organization

Xylem‐colonizing bacterium Xylella fastidiosa is transmitted by various species of Homalodisca in the family Cicadlellidae.

TLS Online TPP Program

#Id: 8838

#Unit 6. System Physiology – Plant

The biosynthesis of chlorophylls and heme begins with the synthesis of δ‐aminolevulinic acid (ALA) from glutamic acid. 

Two molecules of ALA react to yield porphobilinogen (PBG). 

Four molecules of PBG form the ring structure of protoporphyrin IX, the common branch point for the synthesis of heme and chlorophyll. 

To make chlorophyll, a magnesium chelatase inserts Mg into the protoporphyrin IX ring

TLS Online TPP Program

#Id: 6039

#Unit 10. Ecological Principles

Diversity within species 

450-700 (mycoplasma)

4000 in bacteria (eg. Escherichia coli)

13,000 in Fruit-fly (Drosophila melanogaster)

32,000 – 50,000 in rice (Oryza sativa)

35,000 to 45,000 in human beings (Homo sapiens sapiens). 

TLS Online TPP Program

#Id: 6004

#Unit 3. Fundamental Processes

Licensing factor is necessary for initiation of replication at each origin. Licensing factor is present in the nucleus prior to replication, but is removed, inactivated, or destroyed by replication. Initiation of another replication cycle becomes possible only after licensing factor reenters the nucleus after mitosis.