Nonphosphorylated CDK bound to one of its cyclin partners has minimal but detectable protein kinase activity in vitro, although it may be essentially inactive in vivo.

TLS Online TPP Program

#Id: 9206

#XL - T Zoology

Genetic drift 

Genetic drift is an evolutionary force, in which allelic frequency change over generation Just by chance (sampling error). 

The deviations from the expected ratios are random, the direction of change is unpredictable.

TLS Online TPP Program

#Id: 335

#XL - R Botany

Glucagon lowers the cellular level of fructose 2,6 bisphosphate, inhibiting glycolysis and stimulating gluconeogenesis.

TLS Online TPP Program

#Id: 8645

#XL - R Botany

Rb protein regulation by G1 CDKs in mammalian cells is analogous to Whi5 regulation by Cln3-CDK in yeast.

TLS Online TPP Program

#Id: 10647

#XL - R Botany

V.Angiosperm

Stamens are microsporophylls: produce microspores that develop into pollen grains containing “male gametophytes”

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