Which of the following statements about mixtures is FALSE? SELECT ALL THAT APPLY
a
they are all mixed uniformly and have an even
composition throughout
b mixtures can be separated using physical
properties
С
Substances must combine in specific proportions
d the components keep their physical properties

According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this?               a.  this implies that dna and proteins aren't essential in cells today.    b.  this implies that rna can catalyze any chemical reaction that enzymes catalyze.    c.  this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna.    d.  this implies that dna and proteins evolved after rna.