The answer is; catalyst
These proteins are called enzymes. They work by lowering the activation energy of reactants and hence speed up the biochemical reaction. They are not affected in the process hence one enzyme molecule can catalyze many reactions. An example of such an enzyme is carbonic anhydrase that enables carbon dioxide to dissolve in blood plasma as carbonic acid.
Answer:
The diagram below represents some stages in the life cycle of humans. The numbers in the diagram represent various processes in the cycle.
Infrared radiation lies at the frequency just below the frequencies of visible light.
Infrared radiation is termed as an electromagnetic radiation which has longer wavelength more than those which have visible light.
Infrared radiation excites vibrational modes in a molecule through which a change in the dipole moment. Infrared examines transmission and absorption of photons which are in the infrared range. Infrared radiation is used in scientific, military, law enforcement, in industrial, and medical applications.
It would be the last one.