Which of the following mutations would promote malignancy in cells whose proliferation is inhibited by TGFβ?

a. overexpression of Smad2               

b. loss of Smad 4

c. overexpression of TGFβ receptor I

d. loss of TGFβ receptor II

#Question id: 11675

#SCPH28 | Zoology

Processing of filtrate in the proximal and distal tubules:

#Question id: 11676

#I Life Science/ Life Sciences Group – I-V

In humans, the transport epithelial cells in the ascending loop of Henle:

#Question id: 11676

#SCPH28 | Zoology

In humans, the transport epithelial cells in the ascending loop of Henle:

#Question id: 11677

#I Life Science/ Life Sciences Group – I-V

Which of the following contribute to maintaining the high osmolarity of the renal medulla?

I) active transport of salt from the upper region of the ascending limb

II) the spatial arrangement of juxtamedullary nephrons

III) diffusion of urea from the collecting duct

IV) diffusion of salt from the descending limb of the loop of Henle

#Question id: 11677

#SCPH28 | Zoology

Which of the following contribute to maintaining the high osmolarity of the renal medulla?

I) active transport of salt from the upper region of the ascending limb

II) the spatial arrangement of juxtamedullary nephrons

III) diffusion of urea from the collecting duct

IV) diffusion of salt from the descending limb of the loop of Henle

#Question id: 11678

#I Life Science/ Life Sciences Group – I-V

Increased antidiuretic hormone (ADH) secretion is likely after ________.