Devonian - First amphibian and first seed plant appear, and insects Mass extinction late in period

TLS Online TPP Program

#Id: 9538

#Unit 11. Evolution and Behavior

TLS Online TPP Program

#Id: 5929

#Unit 10. Ecological Principles

Four basic processes

a. Energy flow 

b. Mineral cycle 

c. Water cycle 

d. Community dynamics

TLS Online TPP Program

#Id: 10029

#Unit 4. Cell Communication and Cell Signaling

In resting cells,

NF-κB binds directly to an inhibitor called I-κBα

TLS Online TPP Program

#Id: 4768

#Unit 5. Developmental Biology

In C. elegans, conditional specification occur in the development of the endoderm cell lineage.

TLS Online TPP Program

#Id: 2301

#Unit 3. Fundamental Processes

The overall reaction rate for the bacterial RNA polymerase can be as fast as 40–50 nucleotides/ second at 37°C for most transcripts; this is about the same as the rate of translation (15 amino acids/sec), but much slower than the rate of DNA replication (800 bp/sec).