Becker's World of the Cell 9th Edition by Lewis Kleinsmith, Jeff Hardin, Gregory Paul Bertoni

Exercise 3

Wrong Again. For each of the following false statements, change the statement to make it true and explain your reasoning.
(a)Because membranes have a hydrophobic interior, polar and charged molecules cannot pass through membranes.
(b)Proteins typically transmit signals from the outside of the cell to the cytoplasm by flip-flopping from the outer membrane monolayer to the inner monolayer.
(c)O-linked and N-linked glycoproteins are formed when sugar chains are attached to the oxygen and nitrogen atoms of the peptide bonds in proteins.
(d)The three-dimensional structure of a protein cannot be determined unless the protein can be isolated from cells in pure form.
(e)You would expect membrane lipids from tropical plants such as palm and coconut to have short-chain fatty acids with multiple
double bonds.