Will mark as brainliest which statement is true for both incomplete and complete digestive systems? a. materials enter and exit through the same opening b. digestion begins outside cells c. the digestive cavity is like a tube d. continuing feeding is possible

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?