Restriction enzymes: weld together fragments of dna attach to dna molecules at specific sites and cut both strands of dna at that place only cut rna molecules at specific sites and cut both strands of dna at that place are chemical machines that make parts of the cell membrane.

The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.