Select the choice that best completes the following sentence: Phospholipid molecules consist of and segments, and the lipid chain can contain and hydrocarbons.
A. head; tail; hydrophilic; hydrophobic
B. hydrophilic; hydrophobic; head; tail
C. saturated; unsaturated; head; tail
D. saturated; unsaturated; hydrophilic; hydrophobic
E. head; tail; saturated; unsaturated

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Will give ! ! widentify the advantages and disadvantages of renewable and nonrenewable energy resources.