Ion Channels and Transporters — MCQs

All of the following substances have decreased concentration on the luminal side of the proximal convoluted tubule except:

Which membrane channel is mainly affected in Cystic fibrosis?

Which of the following is not an ionic receptor?

What is the physiological condition in which the ratio of potassium permeability to sodium permeability (PK/PNa) is maximized?

Source of ATP in RBCs is

Diffusion of lipid-insoluble substances across the cell membrane depends on all of the following factors except which one?

Which transport process is mediated by carriers and occurs against the concentration gradient?

Which of the following characteristics is shared by both active transport and facilitated diffusion?

What is the process of passive transport of molecules through protein pores/channels in the cell membrane?

Which of the following is a major component of the plasma membrane?