Which is a part of the cell theory?

cells come from pre-existing cells

cells have a nucleus

organisms with one cell must be seen with a microscope

organisms must have more than one cell to live

A - cells come from pre-existing cells. Cell theory is the thought that cells split from one to create a new cell. Therefore cells come from a pre-existing cell.

when a reversible reaction is occurring in both directions at the same rate; the products and reactants do not change in concentration. a chemical reaction where the compound is broken into its constituent parts.

some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a