Arudimentary method to calculate the melting temperature of dna is an equation known as "the wallace rule". this equation is: tm = 2(a+t) + 4(g+c) where a = # of adenine nucleotides in the dna sequence, g = # of guanine, t = # of thymine, and c = # of cytosine. tm (in °c) is the temperature at which double stranded dna will dissociate and become single stranded. the "2" and "4" portions of the equation are weighted factors. why might more weight be given to the gc term of the equation than the at term?

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

. ph changes the ability of them he enzyme to dissolve in water.