As each heme group becomes oxygenated, the Iron "shrinks" and moves into the plane of the heme group. This triggers a change from (what) to (what) by pulling on the (which) helix? Find the correct sequence below:

As each heme group becomes oxygenated, the Iron "shrinks" and moves into the plane of the heme group. This triggers a change from (what) to (what) by pulling on the (which) helix? Find the correct sequence below:




A. tense, relaxed, F
B. relaxed, tense, D
C. tense, relaxed, C
D. relaxed, tense, E
E. tense, relaxed, E


Answer: A