Chapter 5 Subjective 4

Add the correct verb form. Ensure that singular and plural, irregular verb forms, and endings of verbs are used correctly.

1. The conservation of protein A sequences among the diverse species __________ (suggest) that the protein plays a key role in this metabolism.
2. Crystal structure changes in hydrogen or deuterium __________ (have) been __________ (show) to exist via x-ray diffraction, infrared, and nuclear magnetic resonance.
3. S. multiplicata females did not __________ (choose) hetero-­specific mates regardless of water level.
4. Until now, there __________ (be) no experimental confirmation of this hypothesis.
5. Microspheres of like charge were __________ (bind) together with nanoparticles of opposite charge to form clusters of two to nine colloids.
6. Each of the experiments __________ (be) performed at two different photon energies.
7. One third of the mice __________ (be) infected with P. chabaudi.
8. Atomic scale resolution through 4D ultrafast electron diffraction, crystallography, and microscopy _______ (have) made it possible to determine complex transient structures.