氨基酸代谢
　　1。8种营养必需氨基酸，缬、亮、异亮、苯丙、蛋、色、苏、赖(携一两本淡色书来)。生酮氨基酸：亮、赖。 2。参与联合脱氨基的酶主要是ALT(肝组织中)和AST(心肌中)。
　　3。氨的转运有丙氨酸-葡萄糖循环和谷氨酰胺两种方式，在肌肉和肝脏之间转运氨的主要方式是丙氨酸-葡萄糖~ 4。氨基甲酰磷酸合成酶I(CPS-I)是鸟氨酸循环启动过程中的限速酶，其变构激活剂为N-乙酰谷氨酸(AGA)。启动后尿素合成的关键酶是鸟氨酸氨基甲酰转移酶。
　　5。体内甲基的直接供体是SAM，间接供体是N5-CH3-FH4。
　　6。苯丙酮尿症患者缺乏苯丙氨酸羧化酶；白化病是缺乏酪氨酸酶；帕金森病患者缺乏酪氨酸羟化酶 7。参加一碳单位代谢的辅酶是维生素B12转氨酶和氨基酸脱羧酶的辅酶是磷酸吡哆醛(维生素B6) 8。谷氨酸脱羧生成γ-氨基丁酸，组氨酸脱羧生成组胺，色氨酸脱羧生成5-羟色胺。
　　9。FAD、FMN是维生素B2 的活化形式；NAD+、 NADP+是维生素PP的活化形式。 八。核苷酸代谢
　　1。嘌呤核苷酸从头合成的原料是磷酸核糖、氨基酸、一碳单位及CO2等，在磷酸核糖的基础上合成环。合成过程中的调节酶是PRPP合成酶和PRPP酰基转移酶。
　　2。嘧啶核苷酸从头合成的原料是谷氨酰胺、CO2和天冬氨酸，先合成环再与磷酸核糖相连。合成过程中的调节酶是氨基甲酰磷酸合成酶II；合成所用的氨基甲酰磷酸用谷氨酰胺为氮源，尿素合成所需的氨基甲酰磷酸以游离的NH3为氮源。
　　3。嘌呤核苷酸补救合成中HGPRT催化合成的核苷酸是IMP和AMP。 4。自毁容貌症是由于基因缺陷而导致HGPRT完全缺失所致。 5。 5-氟尿嘧啶是胸腺嘧啶类似物，6-巯基嘌呤是次黄嘌呤类似物，氨甲喋呤是叶酸类似物(抑制二氢叶酸还原酶)，氮杂丝氨酸是谷氨酰胺类似物，别嘌呤醇是次黄嘌呤类似物(抑制嘌呤氧化酶，减少尿酸生成) 6。嘌呤核苷酸代谢产物为尿酸，由肾排出。 7。嘧啶碱分解代谢终产物是β-丙氨酸、β-氨基异丁酸、CO2和NH3。

think about what you had for breakfast today. the packaging on any processed food you ate, including cereal, milk,bread and yogurt, has a label that provides you with nutrition information so you can make healthy diet choice. this imformation comes from chemical analysis.
suppose you ate a boiled egg and a banana instead of the cereal and milk. there is no label with nutrition information there, but analytical chemists have rested a sample of eggs and bananas for residues of harmful chemicals so you can be confident that your breakfast is safe to eat.
your toothpaste, too, will have a label that says something like 'active ingredient 0.7% w/w sodium monofluorophosphate'. an analytical chemist would have checked that this amount of active ingredient was correct.
analytical chemists are employed in a range of industries, from food manufacturing to environmental monitoring and foerensic sciences and many more. they use a range of techniques and technologies to determine the identity, quality, and quantity of the chemicals that make up our world.
the composition of consumer goods is of great importance. for example, residues such as dieldrin and DDT have been detected in meat. nutrionists urge us to eat fish on a regular basis to take advantage of the beneficial fatty scids that many fish contain. but fish can also contain heavy metals, such as mercury. goernments have placed restrictions on the amount of pesticides and heavy metals allowed in foods. for example, the acceptable daily intake of DDT is 0.002 milligram per kilogram of body weight per day(0.002mg/kg/day) while that of dieldrin is 0.0001mg/kg/day

主要就是科学家精神
包括一系列的精神品质
如坚持不懈，勇于创新，勇于担当，敢于挑战权威