Question

Only passive type of transport takes place by:

• A. Na${}^{+}$/K${}^{+}$ pump
• B. Carriers
• C. Channels
• D. All pumps

Answer 1

The correct option is C Channels

Channels transport molecules passively only.
Pumps transport molecules only actively.
Carriers transport molecules both actively as well as passively. Na${}^{+}$/K${}^{+}$ pump requires energy for its function.