The break along flat surfaces, describing the different ways a mineral can break
1) "Lustrous appearance with solid form"
2) "Intermediate Electrical conductivity"
3) "Intermediate Ionization energy and Electronegativity"
4) "Non-metallic in chemical behavior but can form alloys"
Hope this helps
From what I remember it's called a substrate
First helicase separates the two strands of DNA and then DNA polymerase adds nucleotides following the base pair rule.