Galaxies such as the Milky Way are held together by _________. A. gluons B. gravity C. dark matter D. dark energy
2 answers:
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Answer: b. reaction 3
Explanation: When an enzyme is present in a reaction acts as a catalyst, increasing velocity of reaction and decreasing the activation energy, when not present an enzyme the reaction velocity is very low and implies high activation energy, being unfavorable to the system
