When blood glucose rises above 5 mM, hexokinase IV activity increases, but hexokinase I is already operating near Vmax and cannot respond to an increase in glucose concentration. 

TLS Online TPP Program

#Id: 9839

#XL - R Botany

TLS Online TPP Program

#Id: 9840

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Plant phytochrome is an autophosphorylating

serine/threonine kinase that may phosphorylate

other proteins

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#Id: 9841

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Three distinct classes of photoreceptors mediate the effects of UV-A/blue light (320–500 nm): the cryptochromes, phototropins and the ZEITLUPE (ZTL) family of proteins

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#Id: 9842

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Cryptochromes under blue light causes

1.Suppression of hypocotyl elongation

2.Promotion of cotyledon expansion

3.Membrane depolarization

4.Inhibition of petiole elongation

5.Anthocyanin production

6.Circadian clock entrainment

TLS Online TPP Program

#Id: 9843

#XL - R Botany

The HY4 gene encodes a 75-kDa cry1 protein with significant sequence homology to microbial DNA photolyase

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#Id: 9844

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Cryptochromes bind a (FAD) and the pterin 5,10 methyltetrahydrofolate (MTHF) as chromophores