Which type of transport is used to move s molecule from a region of low concentration to a region of high concentration

Facilated diffusion only works from high to low concentration. A transport protein binds to the substance on one side of the cell membrane and then releases it on the other side. ACTIVE TRANSPORT involves the transport of molecules from regions of low concentration to regions of high concentration.

Active transport.

Explanation:

Active transport is the process in which molecules or particle move against the gradient i.e from regions of lower concentration to the regions of higher concentration. In bio process, molecules undergoing active transportation usually move by utilizing the energy produced during respiration. The active transportation usually takes place when some molecules are at high concentration inside the cell but they are required by the organism, then carrier protein moves these specific molecules through the process of active transport.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

answer; i believe that the correct answer is (lung);