Which of the following best summarizes the law of conservation of mass?
question 3 options:
matter can be changed but not created or destroyed.
matter can be destroyed during a chemical reaction.
matter that gains mass during a chemical reaction is evidence that matter can be created.

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals