A ribosome-associated protein called RelA receives the “alarm” and produces the “alarmone” ppGpp, which destabilizes open promoter complexes whose lifetimes are normally short, thus inhibiting Transcription.

TLS Online TPP Program

#Id: 1138

#Unit 2. Cellular Organization

Inhibitory Proteins in Cell Cycle-

Sic1 - Binds and inhibits S phase CDKs

CKIs p27, p57, and p21- Bind and inhibit CDKs

INK4 - Binds and inhibits G1 CDKs

Rb - Binds E2Fs

TLS Online TPP Program

#Id: 445

#Unit 2. Cellular Organization

Core DNA has an invariant length of 146 bp, the minimum length of DNA needed to form a stable monomeric nucleosome, and is relatively resistant to digestion by nucleases- DNA FINGER PRINTING

TLS Online TPP Program

#Id: 1207

#Unit 7. System Physiology – Animal

LH is necessary for final follicular growth and ovulation.

TLS Online TPP Program

#Id: 654

#Unit 3. Fundamental Processes

Reversal of the mutation can only be done by same mutagen which created forward mutation.

TLS Online TPP Program

#Id: 1521

#Unit 2. Cellular Organization

Free-energy change for dissociation of a subunit from the D-form polymer is more favorable (negative) than the free-energy change for dissociation of a subunit from the T-form polymer.