An amino acid backbone is drawn below. draw the histidine side chain structure for the predominant ionization state of histidine at ph 8.0. note: if you need to start over, select the double red arrows button.

What problem would a person have if the nucleic acid in one of his or her cells were damaged?

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!