Which type of macromolecule would best be suited for a bodybuilder looking to increase the size of his biceps? * A. Carbohydrates
B. Enzymes
C. Lipids
D. Proteins

In which of the following ways is the function of the surface of a microsphere similar to the function of an actual cell membrane? a.both make it possible for the conditions in the interior to be different from the conditions outside. b.both provide a barrier that keeps water from flowing across it so the interior remains dry. c.both separate the rna that forms in the interior from any rna that might form in the environment. d.both can actively move molecules into the interior or out into the surrounding environment.

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.

List five ways we are indebted to phytoplankton