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A student performed a BioRad miniprep of plasmid DNA that resulted in 100ul(microliter) of DNA solution. To determine the concentration of this solution, 20ul of the DNA solution was placed in 480ul of water and the absorbance of the diluted sample was measured at 260nm. The absorbance relative to a […]

1) What is responsible for the banding pattern seen in skeletal muscle cells? 2) What is the functions of tendons? How is a tendon different from an aponeurosis? How is it similar? 3) How do isotonic and isometric contractions different ? 4) The sternocleidomastoid muscles help to flex the neck. […]

Discussion Board Scientists have learned a lot about genes. It is the hope that one day scientists will be able to remove a gene that causes a defect and replace it with a “normal” gene. They can already do this for some genes. Would it not be great to remove […]

A. Vinegar which is just a dilute acetic solution, is very common and versatile. The concentration of store-bought vinegar around a 5% solution by mass and is density is approximately 1.01 G/ml B. Suppose I dilute does vinegar into a bottle 23 pours water plus one part vinegar in other […]