The main function of the mitochondria is respiration in the cell. To produce energy from broken down organic molecules. (i.e. carbohydrates.)
A water wave should be the answer.. if not then electromagnetic is the closest thing to being correct..
Active transport refers to a substance moving from areas in which it has low concentration to an area with high concentration, one example i guess is endocytosis, "<span>the taking in of matter by a living cell by invagination of its membrane to form a vacuole"</span>
controll is your awser you vary a factor to measure the results
Http://groups.molbiosci.northwestern.edu/holmgren/Glossary/Definitions/Def-C/chrom_theory_inheritanc.... <span>The theory that chromosomes are linear sequences of genes. The unifying theory stating that inheritance patterns may be generally explained by assuming that genes are located in specific sites on chromosomes.
</span>
