Which of the following statements concerning carbohydrates associated with the plasma membrane is correct?

* carbohydrates on the plasma membrane are typically short chains of between two and five monosaccharides.
* carbohydrates are only found associated with the membranes of prokaryotic cells.
* the carbohydrate composition of most eukaryotic plasma membranes is quite similar.
* carbohydrates associated with the plasma membrane are located on both surfaces of the membrane.
* membrane carbohydrates function primarily in cell-cell recognition.