The PHYA gene is transcriptionally active in dark-grown seedlings, but its expression is strongly inhibited in the light in monocots.

TLS Online TPP Program

#Id: 9973

#XL - T Zoology

E3 βTrCP ubiquitin ligase then binds to two phosphorylated residues on β catenin, leading to ubiquitinylation and degradation in proteasomes.

TLS Online TPP Program

#Id: 9993

#XL - T Zoology

Planar Cell Polarity 

direct cells to divide in the same plane (rather than forming upper and lower tissue compartments) and to move within that same plane

TLS Online TPP Program

#Id: 8391

#XL - Q Biochemistry

When the Ca2+ level rises, Ca2+ binds CaM.

TLS Online TPP Program

#Id: 9731

#XL - R Botany

The specialist caterpillars of the monarch butterfly

(Danaus plexippus) are insensitive to the terpenoid toxins. They feed on milkweed leaves and retain the cardenolides. As a result, most insectivorous birds quickly learn to avoid eating monarch caterpillars and adult monarch butterflies.

TLS Online TPP Program

#Id: 8156

#XL - Q Biochemistry

Two different kinds of sorting signals:

Membrane cargo proteins carry cytoplasmic sorting signals

Soluble cargo proteins carry luminal sorting signals