Descriptions of enzyme mechanisms often contain the terms intermediate, transition state, and transition state analogue. the terms intermediate and transition state both describe chemical species along the reaction pathway, but there are important distinctions between the two. transition state analogues are often used in enzyme mechanism studies.

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Explanation: (:

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.