Why must mRNA be used to carry the DNA code?

mRNA is a single helix, unlike DNA, which is a double helix. This means that when it is replicated, it has only one half, making it able to be replicated.

Explanation:

sound moves fastest in solids because the molecules are tightly packed and it allows sound to vibrate

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )