Name the 4 bases of a dna molecule:

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

What substance has a mass of 9.5g and volume of 2.1cm^3