PAS-related domain (PRD) repeats mediate phytochrome dimerization. 

The PRD domain targets the Pfr form of phyB to the nucleus, although it lacks a canonical nuclear localization signal (NLS).

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#Id: 1517

#Unit 2. Cellular Organization

All microtubules are nucleated from structures known as microtubule-organizing centers, or MTOCs.

 

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#Unit 6. System Physiology – Plant

Gibberellin appears to promote flowering in Arabidopsis by activating expression of the LEAFY gene.

The activation of LFY by gibberellin is mediated by the

transcription factor GA-MYB

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#Id: 6081

#Unit 10. Ecological Principles

CONSERVATION STRATEGIES

In-situ (on-site) conservation includes the protection of plants and animals within their natural habitats or in protected areas. 

Biosphere Reserve   2. National Park   3. Wild Life sanctuary 

Ex-situ (off-site) conservation of plants and animals outside their natural habitats. These include botanical gardens, zoo, gene banks, seek bank, tissue culture and cryopreservation.

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#Id: 5474

#Unit 7. System Physiology – Animal

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

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#Id: 10416

#Unit 4. Cell Communication and Cell Signaling

Prolyl hydroxylase 

active at normal O2 levels, Hydroxylation of HIF-1 causes ubiquitinylation and degradation