In the b-galactosidase lab, why was o-nitrophenol-b-d-galactosidase (onpg) used?

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells

What is the ecological role of food chains and food webs

Which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton