Question

passive and active process of membrane transport · concept introduction physiology interactive answer the following questions based on this scenario. what type of transport protein is the ion channel? a. pump b. ligand - gated channel c. voltage - gated channel d. leak channel

Explanation:

Ion channels are membrane - spanning proteins that allow ions to pass through the membrane. There are different types. Ligand - gated channels open or close in response to the binding of a ligand (such as a neurotransmitter). Voltage - gated channels open or close in response to changes in membrane potential. Leak channels are always open and allow a small, continuous flow of ions. A pump is a different type of transport protein that uses energy (such as ATP) to move ions against their concentration gradient. Ion channels are not pumps. Based on the general knowledge of ion channel types, they are not leak channels in most cases when we consider their gating mechanisms. And without information about a ligand binding or a voltage change, we can't say it's ligand - gated or voltage - gated. But ion channels are distinct from pumps.

Answer:

A. Pump