Aldoses with at least three carbons and ketoses with at least four carbons contain chiral centers

TLS Online TPP Program

#Id: 9436

#Unit 11. Evolution and Behavior

Several hypotheses explain the existence of monogamy.

1. Mate-guarding hypothesis, a male stays with a female to protect her from being fertilized by other males.

2. The male assistance hypothesis maintains that males remain with females to help them rear their offspring.

3. The female-enforced monogamy, females stop their male partners from being polygynous.

TLS Online TPP Program

#Id: 9247

#Unit 6. System Physiology – Plant

activation of PPDK through the phosphorolytic cleavage (dephosphorylation) of the phosphorylated Thr (Pi‐dependent/PPi‐forming).

TLS Online TPP Program

#Id: 6503

#Unit 3. Fundamental Processes

These two mechanisms, (1) binding of the capping enzyme to RNA polymerase II specifically through its unique CTD phosphorylated on serine 5 of the heptapeptide repeat during transcription initiation by TFIIH, and (2) activation of the capping enzyme by the serine 5–phosphorylated CTD, result in specific capping of RNAs transcribed by RNA polymerase II.

TLS Online TPP Program

#Id: 659

#Unit 3. Fundamental Processes

Telomeric sequence is the extension of the G-T–rich strand, which for 14 to 16 bases is usually a single strand.

TLS Online TPP Program

#Id: 10326

#Unit 4. Cell Communication and Cell Signaling

Antibodies against 

CTLA-4

PD-L1 or PD-1

A CTLA-4-blocking antibody, ipilimumab