The structural level of a protein least affected by a disruption in hydrogen bonding is the
a. primary level.
d. quaternary level.
b. secondary level.
e. all structural levels are
c. tertiary level equally affected.

answer; protein;

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.