Under what conditions would a molecule need to be actively transported across a membrane?

please give me brainlist and follow

Explanation:

Transport proteins can form a larger opening or pore that allows molecules to pass. Under what conditions would a molecule need to be actively transported across a membrane? A molecule would need to be actively transported when the concentration of the molecule is higher on the other side of the membrane.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.