All small GTPases of the Ras superfamily, Cdc42, Rac, and Rho act as molecular switches, inactive in the GDP-bound state and active in the GTP-bound state.

TLS Online TPP Program

#Id: 9246

#Unit 6. System Physiology – Plant

Diurnal phosphorylated PEPCase is active and incorporation of HCO3 – into PEP. Light stimulates PEPCase‐kinase activity

TLS Online TPP Program

#Id: 3857

#Unit 5. Developmental Biology

Phosphorylation of RegA is mediated by sensor histidine kinases/phosphatases which either phosphorylate or dephosphorylate themselves on a histidine residue when a signal molecule binds to their sensor domain.

TLS Online TPP Program

#Id: 7450

#Unit 5. Developmental Biology

ACG harbours two transmembrane domains & localizes to the membrane of the prespore vesicles.

TLS Online TPP Program

#Id: 5474

#Unit 7. System Physiology – Animal

During Inhibitory postsynaptic potential (IPSP) the excitability of the neuron to other stimuli is decreased

TLS Online TPP Program

#Id: 5740

#Unit 10. Ecological Principles

 Brian Walker (1992) proposed the Redundancy hypothesis Species that play the same roles in a community can compensate for each other if some are lost under particular conditions