Permian - Major mass extinctions, amphibians decline

TLS Online TPP Program

#Id: 3871

#Unit 5. Developmental Biology

Once all proteins are functioning, a few starving cells start to emit cAMP pulses.

TLS Online TPP Program

#Id: 9320

#Unit 4. Cell Communication and Cell Signaling

Light-triggered closing of the cGMP-gated cation

channels causes a drop in the cytosolic Ca2+ concentration inside the rod cell.

TLS Online TPP Program

#Id: 5722

#Unit 10. Ecological Principles

Ecotypes, individuals of a species that vary in external appearance and their variations are genetically fixed and irreversible The individuals of a species growing under different environmental conditions differ in external appearance, but these changes are only temporary, not permanent, and hence reversible Ecads (Ecophenes). 

TLS Online TPP Program

#Id: 5211

#Unit 7. System Physiology – Animal

Activated protein C (APC), along with its cofactor protein S, inactivates factors V and VIII and inactivates an inhibitor of tissue plasminogen activator, increasing the formation of plasmin.

TLS Online TPP Program

#Id: 7805

#Unit 10. Ecological Principles

Microclimate – The actual climatic conditions that organisms live in vary considerably within one climate.

Example of Microclimate is Shade

where temperatures under vegetation in deserts can be 10–20°C lower than sun temperatures.