In the frozen tundra of the Arctic, over 100 years may be needed to decompose 75% of the litter mass. Tree species with high lignin: nitrogen ratios were more resistant to decomposition

TLS Online TPP Program

#Id: 4737

#Unit 5. Developmental Biology

During early cleavage, each asymmetrical division produces:

• One founder cell (denoted AB, E, MS, C, and D) that produces differentiated descendants
• One stem cell (the P1–P4 lineage) 

TLS Online TPP Program

#Id: 6075

#Unit 10. Ecological Principles

Loss of Biodiversity 

Direct ways: Deforestation, hunting, poaching, commercial exploitation.

Indirect ways: Loss or modification of the natural habitats, introduction of exotic species, pollution, etc.

Natural causes - Climate change

TLS Online TPP Program

#Id: 329

#Unit 1. Molecules and their Interaction Relevant to Biology

FBPase-1 is a gluconeogenic enzyme

TLS Online TPP Program

#Id: 4036

#Unit 7. System Physiology – Animal

When the cholinergic vagal fibers to nodal tissue are stimulated, the membrane becomes hyperpolarized and the slope of the prepotentials is decreased

TLS Online TPP Program

#Id: 1745

#Unit 4. Cell Communication and Cell Signaling

MHC molecules in mouse