A)Similar to simple diffusion,uniport transport is nonspecific.
B)Uniport transport is slower but more specific than simple diffusion.
C)Uniport transport is much faster and more specific than simple diffusion.
D)Simple diffusion is reversible but uniport transport is not.

A)leucine is being transported by a uniporter.
B)leucine is being actively pumped across the membrane against its concentration gradient.
C)leucine is being transported by a H⁺ symporter.
D)leucine is crossing the membrane via simple diffusion.

A)the calmodulin-activated plasma membrane Ca²⁺ ATPase.
B)the sarcoplasmic reticulum Ca²⁺ ATPase.
C)the vacuolar F-class proton pump.
D)the plasma-membrane Na⁺/K⁺ ATPase.