Many insect pest species also transmit viruses. The sapsucking species are effective virus vectors, delivering virus particles directly into the vascular tissue, thereby permitting their rapid dissemination throughout the plant

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

TLS Online TPP Program

#Id: 335

#XL - R Botany

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