Which organelle’s function is NOT correct? Mitochondria are the site of energy production in plant and animal cells.

The nucleus contains the genetic information for plant and animal cells.

Vacuoles store water in plant and animal cells.

The cell membrane is the only source of support and structure in plant and animal cells

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.