In which plant were the TED genes (TED2, TED3, TED4) identified as being expressed during the redifferentiation of mesophyll cells into tracheary elements?

#Question id: 2071

#Zoology

Diffusion of ions across membranes through specific ion channels is driven by:

#Question id: 2072

#Biochemistry

Which of the following structures would decrease the electrochemical gradient across a membrane?

#Question id: 2072

#Zoology

Which of the following structures would decrease the electrochemical gradient across a membrane?

#Question id: 2073

#Biochemistry

The phosphate transport system in bacteria imports phosphate into the cell even when the concentration of phosphate outside the cell is much lower than the cytoplasmic phosphate concentration. Phosphate import depends on a pH gradient across the membrane—more acidic outside the cell than inside the cell. In this bacterial cell, phosphate transport is an example of:

#Question id: 2073

#Zoology

The phosphate transport system in bacteria imports phosphate into the cell even when the concentration of phosphate outside the cell is much lower than the cytoplasmic phosphate concentration. Phosphate import depends on a pH gradient across the membrane—more acidic outside the cell than inside the cell. In this bacterial cell, phosphate transport is an example of:

#Question id: 2074

#Biochemistry

In some cells, there are many ion electrochemical gradients across the plasma membrane even though there are usually only one or two proton pumps present in the membrane. The gradients of the other ions are most likely accounted for by: