Evolution by natural selection occurs if variation must lead by Ecotypes. 

Ecophene is not be selected by natural selection

TLS Online TPP Program

#Id: 8776

#XL - T Zoology

TLS Online TPP Program

#Id: 8777

#XL - T Zoology

A.

1 - native

3 - MG

2, 4 - unfolded

B.

1 - native

3, 4 - MG

2 - unfolded

TLS Online TPP Program

#Id: 324

#XL - R Botany

TLS Online TPP Program

#Id: 326

#XL - R Botany

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: 327

#XL - R Botany

Hexokinase IV is subject to inhibition by the reversible binding of a regulatory protein specific to liver

TLS Online TPP Program

#Id: 333

#XL - R Botany

Fructose 2,6-bisphosphate binds to its allosteric site on PFK-1, it increases the enzyme’s affinity for its substrate fructose 6-phosphate and reduces its affinity for the allosteric inhibitors ATP and citrate