Answer:
The process that is directly responsible for the transmembrane movement of K⁺ and Mg²⁺ in the animal cell is the active transport (option)
Step-by-step explanation:
The transport of ions through the membrane occurs through an active transport process, since they are charged particles. Potassium (K⁺) and Magnesium (Mg²⁺) are ions, and their movement through the membrane occurs by active transport
The cell membrane is predominantly hydrophobic, limiting the free passage of polar molecules and ions. The transport of ions occurs through membrane ion channels, where the ions move following an electrochemical gradient, or through active transport mechanisms that require energy. One of the best known active transport mechanisms is the Na⁺-K⁺ ATPase pump.
The other options are not valid because:
- Circulation: refers to the movement of objects or substances through a channel.
- Diffusion: in the case of cell membranes is the passage of substances through them in a passive way, without the use of energy.
- Electrophoresis: is a technique used to separate molecules according to the way they move in an electric field.