B. the chromatids are pulled apart
Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
Coenzymes are often found in vitamins. Metal ions are usually cofactors.
Answer:
RNA - single stranded, contains uracil, and protein synthesis.
DNA - Double stranded, contains thymine, and stored genetic material.
Hope that helps! :)
