There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport?
A.	The site of energy conversion and transport in the plasma membrane involves the phospholipid component
B.	The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP
C.	In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species
D.	Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Answer:C
There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s) is/are true concerning energy converting transport?
A.	The site of energy conversion and transport in the plasma membrane involves the phospholipid component B.	The Na+-K++-ATPase derives energy from hydrolysis of extracellular ATP C.	In some systems, energy inherent in the transmembrane ion gradient can be used to drive transport of a second species D.	Examples of species transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose