Coral reef ecosystems  Most reefs are located between the Tropics of Cancer and Capricorn, in the Pacific Ocean.  Coral reefs are one of the most diverse ecosystems on our planet, yet they cover less than 1% of the Earth's surface. 

 

TLS Online TPP Program

#Id: 6324

#Unit 3. Fundamental Processes

Nonsense mutations release ribosomes within the RNA of a multigene operon, though, enabling rho to terminate transcription prematurely and prevent expression of distal genes in the transcription unit even though their open reading frames contained wild-type sequences.

TLS Online TPP Program

#Id: 10234

#Unit 6. System Physiology – Plant

BRI1–BAK1-BR-→ BSK--→BSU1--→degradation of Phosphorylated BIN2-----→activation of BES1 & BZR1--→BR Response

TLS Online TPP Program

#Id: 3221

#Unit 4. Cell Communication and Cell Signaling

Direct-carcinogens includes:

Ethylmethane sulfonate (EMS)
Dimethyl sulfate (DMS)
Nitrogen mustards

TLS Online TPP Program

#Id: 7041

#Unit 11. Evolution and Behavior

 Natural selection was Darwin’s brilliant hypothesis, independently conceived by Wallace, that accounts for adaptations, features that appear “designed” to fit organisms to their environment.

TLS Online TPP Program

#Id: 6024

#Unit 3. Fundamental Processes

DNA polymerase a is unusual because it has the ability to initiate a new strand. It is used to initiate both the leading and lagging strands. 

The enzyme exists as a complex consisting of a 180-kD catalytic (DNA polymerase) subunit, which is associated with three other subunits: the B subunit that appears necessary for assembly, and two small subunits that provide the primase (RNA polymerase) activity.  It has dual capacity to prime and extend chains, this complex is often called pol a/primase.