Blog

The ΔG equation for the import of an ion into the cell can be expressed as:  ΔGinward = +RT ln [S]inside/[S]outside + zFVm Consider the potential transport of Ca2+ ions for a cell where: (RT ln [S]inside/[S]outside)  =  643 cal/mol    and (zFVm)  =  -1292 cal/mol What will happen to Ca2+ ions if a Ca2+ channel opens on the cell membrane of the cell described above?

Homologous recombination can occur during which phase of meiosis?

Click the single answer choice below to receive 10 free points.

Phosphoglycerides are the most common membrane phospholipids. Other membrane phospholipids substitute which molecule in place of glycerol in their structure?

Which of the following proteins would always have its N- and C- termini on opposite sides of the membrane from each other?

Cystic fibrosis is the result of a malfunction of the cell in transporting Cl- by which of these mechanisms?

A recently isolated bacterial strain has been given to you for general characterization of the genome. You begin by isolating the DNA and subjecting it to thermal denaturation. You use Escherichia coli (E. coli) DNA as a reference.   Based on the information in the graph, you can determine that the Tm of the E. coli genome is

Which of the following works to reduce the overall Na+ concentration inside of the cell?

Each of the following molecules move across membranes by simple diffusion except

Different lipids are symmetrically distributed to each monolayer of a typical lipid bilayer.