They are also necessary for the production of substances such as cholesterol and heme (a component of hemoglobin, the molecule that carries oxygen in the blood). Mitochondrial DNA contains 37 genes, all of which are essential for normal mitochondrial function.
If the burst pipe is easily accessible (such as in a basement or crawl space), hiring a plumber to do a spot repair on a non-emergency basis can start at $50-$250; bringing in a plumber to do the same spot repair on an emergency basis can increase the cost to $300-$600 or more.
But a 2008 internal audit pours some rain on that road. It found that potholes filled by DOT workers cost $23 each to repair, but the ones repaired by contractors cost $129 each. Sealing cracks cost $327 per square mile for state workers and more than twice that amount for contractors.