When light falls on to a leaf, the energy is absorbed and used to carry out specific chemical reactions, helped along by enzymes.

当阳光照射在一片叶子上的时候，能量被吸收，然后在酶的催化作用下，利用吸收的能量进行一些特殊的化学反应。

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They will gaze at colorful crystals, unravel the structures of alkaloids from frog skin, simulate the complex motion of enzymes on computers and study the cellular reactions that fuel life.

他们注视着五彩缤纷的结晶，试图揭开青蛙皮肤上生物碱的结构，在电脑上模拟酶的产生，探索维持生命的细胞反应。

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These reactions are carried out by enzymes and linked through second messengers.

这些反应由酶所引发，且通过第二信使被连接在一起。

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Enzymes work best, enzymes are proteins that catalyze chemical reactions and our bodies operate by elaborate networks of chemical reactions, When we're off from that temperature then they don't work properly.

举酶这个例子再好不过,酶是一种具有催化作用的蛋白质,人体依靠精密复杂的化学反应网络来运转,如果我们体温与之相差较大,这些酶就不能正常工作

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Living cells use enzymes to promote chemical reactions, digesting some molecules and producing others.

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