For a plasma membrane protein that crosses the membrane only once, what is the o

Question

For a plasma membrane protein that crosses the membrane only once, what is the orientation of the amino terminus versus the carboxy terminus?

the carboxy terminus must face the outside of the cell

either the amino terminus or the carboxy terminus can face the outside of the cell

the amino terminus must face the outside of the cell

neither the amino or carboxy terminus faces the outside of the cell; the two ends are embedded within the plasma membrane

the carboxy terminus must face the outside of the cell

either the amino terminus or the carboxy terminus can face the outside of the cell

the amino terminus must face the outside of the cell

neither the amino or carboxy terminus faces the outside of the cell; the two ends are embedded within the plasma membrane

Explanation / Answer

i think that

either the amino terminus or the carboxy terminus can face the outside of the cell

either the amino terminus or the carboxy terminus can face the outside of the cell

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