If the plasma membrane was permeable, but not selectively permeable, how would that affect the cell?

It would most likely kill the cell.

Explanation:

If a cell's membrane is fully permeable (not semi-permeable) then substances that are harmful to the cell are more than likely to enter it at one point or another, which can pretty much end up killing it.

In short, the semi-permeable membrane is there to ensure that only the useful stuff gets in and that the bad stuff stays out.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

explanation:

did you mean: energy is defined ashyperactivitya caloric measurementthe ability to move matterthe ability to think and analyze this form of energy is called "energy in motion" or "energy of moving matter"potential energy kinetic energy electrical energy1 ptlights on a stage can be examples of all of the following forms of energy exceptelectrical energylight energythermal energysound energywhen one type of energy changes to another this is called energy energy is stored based on their position or shape this is called energy.kinetic potential sound electromagnetic