Max Knott and Ernst Ruska invented the electron microscope
The right answr is hydrogen bonds
The hydrogen bond or hydrogen bridge is an intermolecular force involving a hydrogen atom and an electronegative atom such as oxygen, nitrogen and fluorine. The intensity of a hydrogen bond is intermediate between that of a covalent bond and that of van der Waals forces.
The helices of the DNA (both strands) are maintained by hydrogen bonds.
It would be C because it didn't change what amino acid it was
It is a Secondary source because it is conducted by the conductor.
Cancer cells do not have the DNA program to stop replicating new cells the way normal cells do. This causes them to rapidly reproduce causing tumors.
