They lower the activation energy. The energy needed for a reaction to occur.
<span>ANSWER: lowering the amount of energy required.
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BTW. The enzyme is a ferment conducting chemical reactions in living organisms. Each enzyme catalyzes a chemical reaction strictly defined for a specific substrate and conditions.
C. Protons and electrons must be equal as protons have a + charge and electrons are - so they cancel out
Answer:
water
Explanation:
Water puts out fire by creating a barrier between the fuel source and the oxygen source (it also has a cooling effect which has to do with the energy required to convert liquid water into water vapor). It does this because it is a completely, 100% oxidized material. It simply cannot oxidize any further so it will not “burn”. This smothers the fire. The same thing would happen if you used the ashes that remained after a completely spent fire. Or, as I mentioned before, CO2.
Designing efficacious norovirus vaccines remains a major challenge due to several factors:
(1) the extreme genetic variability within the norovirus family and within genogroups
(2) the rapid evolution of antigenically dissimilar pandemic GII.4 norovirus strains
(3) the lack of lasting immunity upon natural exposure to noroviruses in at least a proportion of the population.
