Please help please help please help please help please help please help please help please help please help please help please help please help please help please help LAST OPTION IS electrophoresis

The process that is directly responsible for the transmembrane movement of K⁺ and Mg²⁺ in the animal cell is the active transport (option)

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:

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

the food storage products of chrysophytes are oils or the polysaccharide laminarin.   formerly classified as plants, the chrysophytes contain the photosynthetic pigments chlorophyll a and c all but the yellow-green algae also contain the carotenoid pigment fucoxanthin.