The arrows in the image define the equation as( ) A+B <> C+D
synthesis
reversible
decomposition
exchange

What feature of cell theory is best demonstrated in the image

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient

The structure of a dna molecule is best described as a. one long strand of nucleic acids b. two strands of dna nucleotides joined by hydrogen bonds c. two strands of amino acids joined by hydrogen bonds d. one long strand of amino acids