Answer: Diffusion
What is the main method by which small molecules move?

Diffusion is the first and most important mechanism that allows the flow of small molecules across capillaries. The process depends on the difference of gradients between the interstitium and blood with molecules moving to low concentrated spaces from high concentrated ones.

Within the fields of molecular biology and pharmacology a small molecule is a low molecular weight (< 900 daltons) organic compound that may regulate a biological process with a size on the order of 1 nm. Many drugs are small molecules . Larger structures such as nucleic acids and proteins and many polysaccharides are not small molecules although their constituent monomers (ribo- or ...

Chromatography is a physical method of separation that distributes components to separate between two phases one stationary (stationary phase) the other (the mobile phase) moving in a definite direction. The eluate is the mobile phase leaving the column. This is also called effluent. The eluent is the solvent that carries the analyte.

antiporter (also cal...

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