2025 · Q88
Transport of Na⁺ and Ca²⁺ across the plasma membrane is an example of
general-sciencebiology-human-body
- Aantiport
- Bsymport
- Cuniport
- Daquaporins
Explanation
The transport of Na+ and Ca2+ across the plasma membrane — as in the sodium-calcium exchanger (NCX), which moves Na+ in one direction and Ca2+ in the opposite direction — is the classic example of an antiport. Symport moves two substances in the same direction, uniport moves one substance, and aquaporins are water channels. Hence it is an antiport.